Prefixes Suffixes and Root Words

The root of conferencing is 'confer', which itself has two Latin roots; con, meaning with and ferre, meaning 'to bear'. In this case, you could say 'con' was a prefix for ferre.

If you're looking for a prefix for 'conferencing', try 'tele-'.

ableismableistactableaddableaffableamiablearablesbitablebuyablecablerscabletscapablecitablecodablecurabledatabledisabledowabledryabledupabledurabledyeableeatableeffableenabledenablerenablesequableerrableeyeablefablersfadablefinablefixableflyablefriablefryablegelablegetablehatablehewablehidablehirablelikablelinablelivablelosablelovablemakableminablemixablemovablemutablenamablenotableownableparablepayablepliablepokableposablepotableratableretableridableropablerowablerulablesalablesavablesayableseeablesewablesizableskiablesowablestabledstablerstablestableautabletstakabletamabletaxabletenabletotabletowabletriabletunabletypableuseablevocablevotablewadable

Here's another list:

5-letter words

abler, ables, cable, fable, gable, sable, table

6-letter words

ablest, arable, cabled, cables, cablet, doable, dyable, enable, fabled, fabler, fables, gabled, gables, liable, sables, stable, suable, tabled, tables, tablet, unable, usable, viable

7-letter words

actable, addable, affable, amiable, arables, bitable, buyable, cablets, capable, citable, codable, curable, datable, disable, dowable, dryable, dupable, durable, dyeable, eatable, effable, enabled, enabler, enables, equable, eyeable, fablers, fadable, finable, fixable, flyable, friable, gelable, getable, hatable, hewable, hidable, hirable, likable, linable, livable, losable, lovable, makable, minable, mixable, movable, mutable, namable, notable, ownable, parable, payable, pliable, potable, ratable, retable, ridable, ropable, rowable, rulable, salable, savable, sayable, seeable, sewable, sizable, skiable, sowable, stabled, stabler, stables, tableau, tablets, takable, tamable, taxable, tenable, totable, triable, tunable, typable, useable, vocable, votable, wadable, wirable

8-letter words

abatable, ablegate, abusable, adorable, agitable, alliable, amenable, amicable, amusable, anableps, arguable, atonable, avowable, bailable, bankable, barrable, bearable, beatable, beddable, bendable, biddable, billable, bindable, biteable, blamable, boatable, boilable, bondable, bribable, buffable, burnable, cableway, callable, capabler, cartable, cascable, cashable, causable, chewable, citeable, closable, clubable, coinable, cookable, culpable, curbable, cuttable, damnable, dateable, deniable, diablery, dimmable, dippable, disabled, disables, drapable, drawable, drivable, durables, dutiable, eatables, editable, educable, enablers, enviable, erasable, evadable, evitable, evocable, exorable, expiable, faceable, farmable, feedable, fellable, fileable, findable, fineable, fishable, fittable, foamable, foilable, foldable, fordable, formable, framable, furlable, gainable, gettable, giveable, gnawable, gradable, grazable, growable, guidable, gullable, gustable, hangable, hateable, healable, hearable, heatable, helpable, hireable, holdable, huggable, hummable, huntable, imitable, inarable, instable, inviable, isolable, issuable, joinable, keepable, kickable, kissable, knowable, lapsable, laudable, leasable, lendable, leviable, lienable, liftable, likeable, lineable, linkable, listable, liveable, loanable, lockable, loveable, mailable, makeable, mappable, maskable, meltable, mendable, millable, mineable, mockable, moldable, movables, moveable, nameable, nestable, nettable, notables, obeyable, obviable, openable, operable, outfable, overable, oxidable, packable, palpable, parables, parsable, passable, pawnable, payables, peccable, peelable, pitiable, placable, playable, plowable, portable, potables, pourable, probable, provable, prunable, quotable, radiable, raisable, rateable, readable, reapable, reelable, reliable, rentable, retables, reusable, rideable, rinsable, rippable, ruinable, rustable, sailable, saleable, salvable, satiable, saveable, scalable, sealable, seisable, seizable, sellable, sendable, servable, shakable, shamable, shapable, sharable, shavable, shedable, singable, sinkable, sizeable, slakable, slidable, smokable, sociable, solvable, sorbable, sortable, sparable, stablers, stablest, statable, stonable, storable, stowable, suitable, summable, surfable, swayable, syllable, tableaus, tableaux, tableful, tableted, tabletop, takeable, talkable, tameable, tannable, tastable, taxables, tearable, tellable, testable, tillable, tiltable, tippable, tithable, titrable, tradable, tubbable, tuneable, turnable, typeable, undoable, unstable, unusable, unviable, valuable, variable, vendable, viewable, violable, vitiable, vocables, voidable, voteable, wadeable, walkable, washable, wastable, wearable, weldable, wettable, willable, windable, winnable, workable, writable

9-letter words

abdicable, ablegates, abradable, accruable, adaptable, admirable, adoptable, advisable, affixable, agreeable, alienable, allocable, allowable, alterable, amendable, assumable, auditable, available, avoidable, awardable, breakable, buildable, burnables, cablegram, cableways, canoeable, capablest, cascables, catchable, checkable, claimable, cleanable, clearable, cleavable, climbable, closeable, clubbable, coachable, cogitable, colorable, constable, countable, coverable, covetable, crossable, crushable, danceable, debatable, decidable, definable, delegable, derivable, desirable, detonable, devisable, diablerie, dilatable, dividable, doubtable, draftable, drapeable, drillable, drinkable, driveable, droppable, dubitable, educables, ejectable, electable, emendable, endurable, enjoyable, enterable, equitable, erectable, estimable, evolvable, exactable, excisable, excitable, excusable, execrable, fatigable, favorable, filtrable, flammable, flappable, flushable, focusable, forgeable, frameable, frankable, generable, getatable, gleanable, grantable, graspable, grazeable, groupable, guessable, gustables, habitable, hatchable, heritable, honorable, ignitable, ignorable, immovable, immutable, imputable, incapable, incunable, incurable, ineffable, inferable, insurable, ionizable, irritable, kneadable, labelable, laughable, leachable, learnable, limitable, litigable, locatable, malleable, matchable, medicable, memorable, miserable, mountable, moveables, navigable, nonarable, nonviable, numerable, opposable, orderable, outfabled, outfables, palatable, peaceable, permeable, pivotable, placeable, plantable, pleadable, portables, pregnable, previable, printable, probables, reachable, referable, refutable, relatable, reliables, removable, renewable, reparable, repayable, reputable, resalable, rescuable, revisable, revivable, revocable, revokable, rotatable, sablefish, saturable, scannable, scrutable, semblable, separable, severable, shakeable, shapeable, shareable, shiftable, shippable, shockable, skippable, sliceable, smokeable, sociables, soundable, spallable, sparables, spareable, speakable, spendable, spillable, spoilable, spottable, stableman, stablemen, stackable, stageable, stainable, stateable, stealable, steerable, stoppable, storables, superable, swimmable, syllabled, syllables, tablefuls, tableland, tablemate, tablesful, tableting, tabletops, tabletted, tableware, teachable, temptable, tenurable, thinkable, timetable, tolerable, touchable, traceable, tractable, tradeable, trainable, treatable, trustable, turntable, unactable, unamiable, uneatable, unflyable, unifiable, unlikable, unlivable, unlovable, unmixable, unmovable, unridable, unsalable, unsayable, unstabler, untamable, untenable, utterable, valuables, variables, vegetable, venerable, veritable, visitable, washables, watchable, wearables, weighable, worktable

10-letter words

abominable, absorbable, acceptable, achievable, acquirable, actionable, adjustable, adsorbable, affectable, affirmable, affordable, amerciable, anablepses, analyzable, answerable, appealable, appeasable, applicable, approvable, arbitrable, ascendable, ascribable, assailable, assessable, assignable, attachable, attainable, believable, bleachable, breakables, breathable, bridgeable, cablegrams, calculable, cancelable, censurable, changeable, chargeable, charitable, chelatable, coagulable, cognizable, combinable, commutable, comparable, computable, condonable, constables, consumable, creditable, crunchable, cultivable, deceivable, declarable, declinable, defendable, deferrable, deformable, defrayable, degradable, delectable, demandable, dependable, depletable, deplorable, deployable, deportable, desirables, despicable, detachable, detectable, deterrable, detestable, diableries, dialyzable, dislikable, disposable, disputable, disyllable, drinkables, effaceable, embossable, employable, encashable, endorsable, enumerable, enunciable, eradicable, examinable, excludable, executable, expandable, expectable, expellable, expendable, explicable, exportable, extendable, extricable, extrudable, factorable, fathomable, filterable, flammables, forgivable, formidable, governable, handleable, honourable, hospitable, illaudable, imaginable, immovables, impalpable, impassable, impeccable, implacable, importable, improbable, improvable, impugnable, inarguable, inclinable, includable, inculpable, incunables, incurables, indictable, ineducable, inevitable, inexorable, inexpiable, inflatable, inimitable, injectable, inoperable, insatiable, insociable, insolvable, integrable, intuitable, invaluable, invariable, investable, inviolable, irremeable, isolatable, lamentable, licensable, listenable, machinable, manageable, marketable, measurable, mensurable, metastable, miserables, mistakable, modifiable, negotiable, nondurable, nonsalable, nontaxable, noticeable, notifiable, numberable, observable, obtainable, oxidizable, pacifiable, pardonable, patentable, penetrable, perdurable, perishable, permutable, personable, pilferable, pocketable, ponderable, predicable, preferable, presumable, procurable, profitable, promotable, propagable, pulverable, punishable, quenchable, realizable, reasonable, rebuttable, recallable, recappable, receivable, reclosable, recordable, recoupable, recyclable, redeemable, refillable, reformable, refundable, releasable, relievable, relishable, remarkable, remediable, remittable, removeable, renderable, repairable, repealable, repeatable, replicable, reportable, resealable, resectable, reservable, resettable, resolvable, respirable, restorable, returnable, revealable, reviewable, revolvable, rewardable, roundtable, screenable, scrubbable, searchable, seasonable, selectable, semblables, settleable, shrinkable, spreadable, squeezable, stablemate, stableness, statutable, strippable, sublimable, subsumable, sufferable, summonable, supposable, survivable, switchable, tablecloth, tablelands, tablemates, tablespoon, tabletting, tablewares, targetable, temperable, tenantable, terminable, timetables, titratable, triturable, turntables, unamenable, unarguable, unbearable, unbeatable, unbendable, unburnable, unchewable, undeniable, uneducable, unenviable, unfindable, unknowable, unnameable, unopenable, unpassable, unplayable, unprovable, unreadable, unreliable, unscalable, unsellable, unshakable, unsinkable, unslakable, unsociable, unsolvable, unstablest, unsuitable, untestable, untillable, unwearable, unwinnable, unworkable, upgradable, usableness, utilizable, vegetables, verifiable, vindicable, vulnerable, watchables, worktables

11-letter words

abolishable, accountable, addressable, allocatable, amiableness, amortizable, applaudable, appreciable, articulable, assimilable, attemptable, automatable, cancellable, capableness, certifiable, cherishable, collectable, comfortable, commandable, commendable, committable, compassable, compellable, compensable, concealable, conceivable, condemnable, condensable, conferrable, confessable, confirmable, confiscable, conformable, connectable, consignable, construable, consumables, containable, contestable, conversable, correctable, curableness, deferrables, deflectable, delectables, deliverable, demountable, denumerable, depreciable, describable, detonatable, developable, diagnosable, disablement, disavowable, discardable, discernable, discussable, dislikeable, dispensable, displayable, disposables, disprovable, dissociable, dissolvable, dissyllable, disyllables, durableness, embraceable, employables, enforceable, enlargeable, equableness, escheatable, exercisable, expendables, explainable, exploitable, extractable, falsifiable, fashionable, fermentable, fissionable, foreseeable, forfeitable, forgettable, harvestable, illimitable, illuminable, immedicable, immitigable, impeachable, impermeable, implantable, impregnable, inadvisable, inalienable, inalterable, increasable, indefinable, indomitable, indubitable, ineluctable, inenarrable, inequitable, inescapable, inestimable, inexcusable, inflammable, inflatables, inflectable, inhabitable, inheritable, injectables, innumerable, inscrutable, inseparable, insuperable, intolerable, intractable, invariables, irradicable, irrecusable, irrefutable, irremovable, irreparable, irrevocable, justiciable, justifiable, likableness, livableness, localizable, losableness, lovableness, machineable, manipulable, medicinable, memorizable, mentionable, movableness, nonburnable, noncallable, nondisabled, nondurables, nonreusable, nonsinkable, nontaxables, notableness, observables, organizable, pensionable, perceivable, performable, perishables, persuadable, perturbable, pleasurable, pliableness, polarizable, postponable, potableness, practicable, predicables, predictable, presentable, preservable, preventable, processable, projectable, publishable, purchasable, pyrolyzable, qualifiable, receivables, reclaimable, recoverable, rectifiable, recyclables, redoubtable, regenerable, registrable, regrettable, relocatable, replaceable, repleviable, respectable, restartable, retractable, retrainable, retrievable, returnables, roundtables, sablefishes, salvageable, satirizable, satisfiable, serviceable, sizableness, specifiable, stablemates, stretchable, supportable, surpassable, sustainable, swallowable, tablecloths, tablespoons, tarnishable, tenableness, trafficable, trailerable, traversable, treasonable, treasurable, trisyllable, tunableness, unadaptable, unadoptable, unalienable, unalterable, unavailable, unavoidable, unbreakable, unbudgeable, unbuildable, uncatchable, uncheckable, unclimbable, unclubbable, uncountable, uncrossable, uncrushable, undanceable, undauntable, undebatable, undecidable, undefinable, undesirable, undoubtable, undrinkable, unelectable, unendurable, unescapable, unexcitable, unfavorable, unflappable, ungraspable, unguessable, unignorable, uninsurable, unlearnable, unmatchable, unmemorable, unpalatable, unprintable, unreachable, unremovable, unshockable, unspeakable, unstoppable, unteachable, unthinkable, untouchable, untraceable, unutterable, unwatchable, unworkables, upgradeable, vaporizable, vitrifiable, warrantable, whistleable

12-letter words

abstractable, accreditable, adorableness, agglutinable, amicableness, approachable, appropriable, attributable, bioavailable, circulatable, classifiable, collectables, communicable, compoundable, conscionable, considerable, contrastable, controllable, correlatable, criticizable, culpableness, cultivatable, damnableness, decasyllable, decipherable, decomposable, demonstrable, determinable, diagnoseable, diagrammable, diminishable, disablements, disagreeable, discountable, discoverable, dishonorable, displaceable, disreputable, dissyllables, distractable, distrainable, documentable, downloadable, dramatizable, emulsifiable, enviableness, equiprobable, exchangeable, extraditable, fashionables, fertilizable, fissionables, forecastable, formalizable, hydrolyzable, hypermutable, hypnotizable, identifiable, immeasurable, immensurable, impenetrable, imperishable, imponderable, inappeasable, inapplicable, incalculable, incommutable, incomparable, incomputable, inconsolable, inconsumable, incorporable, indeclinable, indefinables, indisputable, ineffaceable, ineradicable, inexplicable, inexpugnable, inextricable, inflammables, inhospitable, inseparables, insufferable, interminable, invulnerable, irredeemable, irreformable, irrefragable, irremediable, irrepealable, irresolvable, jettisonable, laudableness, magnetizable, maintainable, maneuverable, marriageable, mechanizable, merchantable, microwavable, monosyllable, nonbreakable, noncrushable, nondisableds, nonflammable, nonmalleable, nonrenewable, nonrepayable, nonreusables, normalizable, octosyllable, photolyzable, pitiableness, polysyllable, precipitable, programmable, prosecutable, provableness, pulverizable, quantifiable, questionable, readableness, rechargeable, recognizable, reconcilable, registerable, rehydratable, reimbursable, reliableness, rememberable, renegotiable, reproachable, researchable, respectables, restrainable, sanctionable, saponifiable, sedimentable, sociableness, stablenesses, subdividable, suitableness, summarizable, superposable, surmountable, thermostable, throttleable, transferable, transfusable, translatable, transmutable, transposable, trisyllables, unacceptable, unaffordable, unanalyzable, unanswerable, unappealable, unappeasable, unassailable, unattainable, unbelievable, unbreachable, unbreathable, unbridgeable, uncapturable, unchangeable, uncharitable, uncultivable, undependable, undesirables, undetectable, undisputable, unemployable, unfathomable, unforgivable, ungovernable, unimaginable, unlistenable, unmanageable, unmarketable, unmeasurable, unmistakable, unnegotiable, unnoticeable, unobservable, unobtainable, unpardonable, unpatentable, unprofitable, unquenchable, unrealizable, unreasonable, unrecyclable, unredeemable, unremarkable, unrepeatable, unresolvable, unreturnable, unreviewable, unsearchable, unseasonable, unstableness, untouchables, unverifiable, usablenesses, valuableness, vanquishable, variableness, violableness, voidableness, withdrawable, workableness

13-letter words

administrable, admirableness, advisableness, agreeableness, amiablenesses, anticipatable, apportionable, ascertainable, availableness, biodegradable, capablenesses, commensurable, companionable, conditionable, confiscatable, considerables, copyrightable, curablenesses, decasyllables, desirableness, dischargeable, disciplinable, discreditable, discriminable, durablenesses, embarrassable, enjoyableness, equablenesses, equitableness, establishable, estimableness, exceptionable, excitableness, excusableness, execrableness, favorableness, generalizable, graphitizable, habitableness, honorableness, immovableness, immutableness, imperceivable, imperishables, imperturbable, imponderables, impracticable, inappreciable, incapableness, inconceivable, incontestable, indefatigable, indescribable, indispensable, indissociable, ineffableness, inexplainable, influenceable, insupportable, interoperable, interpretable, irreclaimable, irrecoverable, irreplaceable, irretrievable, irritableness, knowledgeable, laughableness, likablenesses, livablenesses, losablenesses, lovablenesses, manipulatable, memorableness, metabolizable, microfilmable, microwaveable, mineralizable, miserableness, monosyllables, movablenesses, multivariable, nonabsorbable, noncancelable, noncomparable, nondeferrable, nondegradable, nondepletable, nondetachable, nondialyzable, nonexpendable, nonfilterable, nonmeasurable, nonnegotiable, nonperishable, nonrecyclable, nonrefillable, nonrefundable, nonreturnable, nonshrinkable, notablenesses, objectionable, octosyllables, palatableness, paraphrasable, peaceableness, pliablenesses, polysyllables, potablenesses, programmables, pronounceable, recommendable, reinforceable, removableness, replenishable, representable, semipermeable, separableness, sizablenesses, substitutable, superableness, tablespoonful, teachableness, tenablenesses, thinkableness, tractableness, transferrable, transformable, transmittable, transportable, tunablenesses, ultrareliable, unaccountable, unassimilable, unassuageable, uncomfortable, unconceivable, unconformable, unconquerable, uncontainable, uncorrectable, undeliverable, undescribable, undiagnosable, unemployables, unenforceable, unexplainable, unfalsifiable, unfashionable, unforeseeable, unforgettable, unfulfillable, unimpeachable, uninhabitable, unjustifiable, unmentionable, unperformable, unpredictable, unpublishable, unreclaimable, unrecoverable, unrespectable, unsalvageable, unserviceable, unspecifiable, unsupportable, unsurpassable, unsustainable, unwarrantable, venerableness, veritableness, volatilizable

14-letter words

acceptableness, accomplishable, adorablenesses, amicablenesses, camouflageable, changeableness, charitableness, comparableness, computerizable, contradictable, creditableness, crystallizable, culpablenesses, damnablenesses, dependableness, deplorableness, despicableness, detestableness, diagonalizable, differentiable, discomfortable, discourageable, disrespectable, disserviceable, enviablenesses, extinguishable, formidableness, hyperexcitable, hyperirritable, imaginableness, impassableness, impressionable, inapproachable, incommunicable, inconsiderable, incontrollable, indecipherable, indecomposable, indemonstrable, indeterminable, indiscoverable, indispensables, inevitableness, inexorableness, inimitableness, insatiableness, insurmountable, invaluableness, inviolableness, irreconcilable, irreproachable, lamentableness, laudablenesses, manageableness, nonaccountable, noncondensable, nondegradables, nonfissionable, nonforfeitable, noninflammable, nonjusticiable, nonperishables, nonpolarizable, nonreturnables, pardonableness, personableness, pitiablenesses, profitableness, proportionable, provablenesses, rationalizable, readablenesses, reasonableness, rediscountable, reliablenesses, remarkableness, reprogrammable, seasonableness, sociablenesses, sufferableness, suitablenesses, superimposable, tablespoonfuls, tablespoonsful, terminableness, thermoformable, transplantable, unapproachable, unattributable, unclassifiable, uncommunicable, unconscionable, uncontrollable, undecipherable, undeniableness, understandable, undeterminable, undiscoverable, unidentifiable, unmentionables, unpredictables, unprogrammable, unquantifiable, unquestionable, unrecognizable, unreconcilable, unsociableness, unstablenesses, untranslatable, valuablenesses, variablenesses, verifiableness, violablenesses, voidablenesses, vulnerableness, workablenesses

15-letter words

accountableness, admirablenesses, advisablenesses, agreeablenesses, antifashionable, availablenesses, comfortableness, conceivableness, desirablenesses, distinguishable, enjoyablenesses, equitablenesses, estimablenesses, excitablenesses, excusablenesses, execrablenesses, fashionableness, favorablenesses, habitablenesses, hendecasyllable, honorablenesses, hypercoagulable, illimitableness, immovablenesses, immunoassayable, immutablenesses, impregnableness, inalterableness, incapablenesses, incommensurable, indefinableness, indisciplinable, indomitableness, indubitableness, ineffablenesses, inexcusableness, inflammableness, inheritableness, inscrutableness, inseparableness, interchangeable, intolerableness, irreconcilables, irreparableness, irrevocableness, irritablenesses, laughablenesses, memorablenesses, miserablenesses, noncontrollable, nonquantifiable, nonsaponifiable, nonsedimentable, nontransferable, palatablenesses, peaceablenesses, photodegradable, pleasurableness, practicableness, presentableness, removablenesses, respectableness, separablenesses, serviceableness, superablenesses, teachablenesses, thinkablenesses, tractablenesses, unalterableness, uncategorizable, unchallengeable, unclimbableness, uncompromisable, uncopyrightable, undesirableness, unendurableness, unexceptionable, unfavorableness, unknowledgeable, unobjectionable, unpronounceable, venerablenesses, veritablenesses, warrantableness

16-letter words

acceptablenesses, changeablenesses, charitablenesses, communicableness, comparablenesses, creditablenesses, dependablenesses, deplorablenesses, despicablenesses, determinableness, detestablenesses, disagreeableness, dishonorableness, disreputableness, formidablenesses, hendecasyllables, imaginablenesses, immeasurableness, impassablenesses, imperishableness, incommensurables, inconsolableness, indisputableness, inevitablenesses, inexorablenesses, inexplicableness, inexpugnableness, inextinguishable, inhospitableness, inimitablenesses, insatiablenesses, insufferableness, interminableness, invaluablenesses, inviolablenesses, invulnerableness, irremediableness, lamentablenesses, manageablenesses, nonbiodegradable, pardonablenesses, personablenesses, profitablenesses, questionableness, reasonablenesses, remarkablenesses, seasonablenesses, sufferablenesses, supercomfortable, superserviceable, terminablenesses, ultrarespectable, unassailableness, unchangeableness, uncharitableness, undeniablenesses, unprofitableness, unreasonableness, unseasonableness, unsociablenesses, ununderstandable, verifiablenesses, vulnerablenesses

17-letter words

accountablenesses, comfortablenesses, companionableness, conceivablenesses, fashionablenesses, illimitablenesses, impregnablenesses, inalterablenesses, inconceivableness, indefatigableness, indefinablenesses, indescribableness, indispensableness, indistinguishable, indomitablenesses, indubitablenesses, inexcusablenesses, inflammablenesses, inheritablenesses, inscrutablenesses, inseparablenesses, intertranslatable, intolerablenesses, irrecoverableness, irreparablenesses, irreplaceableness, irrevocablenesses, knowledgeableness, nonsuperimposable, objectionableness, pleasurablenesses, practicablenesses, presentablenesses, respectablenesses, serviceablenesses, unalterablenesses, unclimbablenesses, undesirablenesses, unendurablenesses, unfashionableness, unfavorablenesses, warrantablenesses

18-letter words

communicablenesses, determinablenesses, disagreeablenesses, dishonorablenesses, disreputablenesses, immeasurablenesses, imperishablenesses, inconsiderableness, inconsolablenesses, indisputablenesses, inexplicablenesses, inexpugnablenesses, inhospitablenesses, insufferablenesses, interminablenesses, intersubstitutable, invulnerablenesses, irreconcilableness, irremediablenesses, irreproachableness, noninterchangeable, questionablenesses, unassailablenesses, unchangeablenesses, uncharitablenesses, unconscionableness, unprofitablenesses, unreasonablenesses, unseasonablenesses

19-letter words

companionablenesses, inconceivablenesses, indefatigablenesses, indescribablenesses, indispensablenesses, interchangeableness, irrecoverablenesses, irreplaceablenesses, knowledgeablenesses, objectionablenesses, unexceptionableness, unfashionablenesses

20-letter words

inconsiderablenesses, irreconcilablenesses, irreproachablenesses, radioimmunoassayable, unconscionablenesses

21-letter words

indistinguishableness, interchangeablenesses, unexceptionablenesses

23-letter words

indistinguishablenesses