Well, honey, you've got "hopped" and "popped" - those are the only two six-letter words with double "pp" in them. So, there you have it, short and sweet.
Six letter words starting with N:naggednailednapkinnationnaturenectarnearlyneaterneatlyneededneedleneckednegatenervesnestednestleneuternibblenicelynickelniecesnightsnimbleninetynogginnipplenobodynoodlenormalnoticenotionnovelsnovicenozzlenudgednuggetnursesnumbernurishnuzzlenylons
Some six letter words that end in double letters:accessacrossapogeebamboobefallboo booboohoobungeebypasscaresscoffeecouleecuckoodecreedegreeduressegressembossenrollentreeexcessgoateeharassHawaiilayofflycheemorassmuumuupayoffpeeweepizazzrebuffrecallrecessrefillremissripoffrunoffscrollscruffsetteeshrillsoireesquallstressstrolltarifftattoothrilltoffeetoupeeunlessvoodoo
abbreviationaccumulationaccentuationaggressivelyappreciationappropriatedconnotationsdissatisfieddisassociateexpressivelyinstallation
Motion is all I can think of
Here are some 6 letter words ending with T:absentassentbulletcarrotclientdeportdesertdecentexpertexportexpertforgetfaucetferretfreightgobletheighthornetindentimportimpartjacketknightlatentlariatlocustlatestmalletmarketmagnetmaggotnitwitnonfatorientoccultoffsetoutletoutfitpotentpatentpulpitpocketparentparrotpelletresultresortresentrepentregretrelentsecretscriptsplintsquintsummitsquirtspirittalentunseatvacantvelvetwalletyogurt
Six letter words starting with the letter "T"ThreatThreadTinkerTimingTakingTeamedToppedTriple
There are no English words ending in "-six", let alone six letter words.
All words in the English language must have vowels. Even one letter words like 'a' or 'I'.
Six letter words that end with H:AmbushAttachAweighBanishBleachBlotchBluishBoyishBranchBreachBreathBreechBroachBroochBrunchCaliphChurchClinchClutchCrotchCrouchCrunchCrutchDanishDearthDetachDrenchFamishFetishFinishFlinchFourthFrenchGarishGlitchGrinchGrouchGrowthHaunchHealthHearthImpishKiboshKirschKitschLaunchLavishLengthLoofahLowishMenschModishMopishMulishNewishOnrushOwlishPariahParishPaunchPerishPlinthPloughPolishPreachPunishQuenchRadishRavishRelishRewashScorchScotchSearchSeraphSheathSketchSleighSleuthSlouchSnitchSpeechSplashSquashSquishStarchStenchStitchSwatchSwitchSwooshThatchThoughThrashThrushTrenchTroughTwitchVanishWarmthWealthWhooshWraithWreathWrenchZenith
Here is a list of six letter words starting with Q:quakerquaggaquasarquezalquincequiver
Some six letter words that rhyme with 'sigh' are:banzaiherebysupply
Some six letter words ending in R are:antleranswerbeaverbetterbitterborderbutlerbuttercratercursorcuterfalterfiltergarterhamperhatterhealerheaterhotterjuniorkinderladderlardermurderporterpotter