With a minimum word-length of eight letters:
adopters
apothems
davenport
davenports (longest - 10 letters)
dramshop
handover
handovers
handsome
handsomer
hardnose
hardtops
headmost
herdsman
homestand
horseman
madrones
manropes
menorahs
metaphor
metaphors
methadon
methadons
monstera
mordants
mordents
notepads
onstream
operands
operants
orphaned
overhand
overhands
overmans
overpast
padrones
pandores
panthers
pastored
phaetons
phantoms
phonated
phonates
phorates
pomander
pomanders
portends
potheads
potshard
potsherd
pronated
pronates
proteans
protends
ransomed
readopts
rhamnose
rhapsode
stanhope
tamponed
teraohms
tonearms
trashmen
varments
No words can be spelled using all of the letters. Some words using some of the letters are:HoldupUpholdProudDropHoldHourLordPlodPourProdDuoDuhHopOldOurPodProRod
Words that can be made from the letters in "thing" are:ginhihinthitIinitnighnightnitthintin
No words can be made using all of the letters. Some words using some of the letters are:RodentDetoxDroneGonerNotedTonedTonerTrendDentDoneDoteGentGoneNerdNextNodeNoteOxenRentRodeTendTongToreTornTrodDenDoeDogDotEgoEndGetGotNetNodNotOdeOneOreRexRodTenTon
Some words formed using the letters LLEDNCE:CedeCeeCelledCelCellDeDeeDeleDelDellDeneDenEdEelElEldEllEndEnLedLedeLeeLendNeedNeNee
Words that can be spelled using letters from "marmalade" are:AlarmedArmadaMadameMeddlerRammedAlarmArmedDreamMedalRealmAreaDealDearDramLameLardLearMadeMareMealReadRealArmEarElmLadMadMedRamRed
No words can be made using all of the letters of 'Sophie'.Some words that can be made using some of the letters are:HopesPoiseHipsHopeHopsPiesPosePoshShipShoeShopHipHisHopPieSheSip
No words can be spelled using all of the letters 'suaave'.Some words that can be spelled using some of the letters are:SuaveSaveVaseAveSeaUseUs
Words that can be made using the letters from 'Happy Halloween' are:aallallowananyapeappallappearappleawleelellendendowewehahalehallhandhandyhappenhayhealheapheelhellohellhelphewhoeholehophopehowlalanelaplawleanloanlownapnapeneonnewnonowpalpalepanpanepawpawnpeelpenpeoplepewplaneplowwon
Some words that can be formed using the letters payroll:AllAlloyAlpAllyLapLayLopLoryLoyalOarOpalOralOrallyPalPallPallorPallyParPayrollPayPlayPloyPlyPolarPolPollPrayProPryRallyRapRayRollRopyRoyalRyaYapYar
There are no English words you can make using only those letters.
There are no words that can be spelled using all of these letters. The longest words have eight letters.
Using the letters abcdefg you can spell a few 5 letter words. Badge, caged and faced are words spelled using the letters abcdefg.