List of 13-letter words containing FF

AFFECTABILITY AFFECTIBILITY AFFECTIONALLY AFFECTIONLESS AFFENPINSCHER AFFIRMATIVELY AFFLICTEDNESS AFFORESTATION AFFRANCHISING AFFREIGHTMENT AFFRIGHTFULLY AFFRIGHTINGLY AFFRONTEDNESS AMIDOCAFFEINE AUTODIFFUSION BELIEFFULNESS BUFFALOFISHES CANDLESNUFFER CHAUFFEURSHIP CHIFFONNIERES COAFFIRMATION COEFFICIENTLY COEFFLUENTIAL COFFEEBERRIES COFFEEGROWING COFFEEHOUSING COUNTERAFFIRM COUNTEREFFORT CYCLOPARAFFIN DECAFFEINATED DECAFFEINATES DEHYDROFFROZE DIEFFENBACHIA DIFFARREATION DIFFEOMORPHIC DIFFERENTIALS DIFFERENTIANT DIFFERENTIATE DIFFERENTNESS DIFFICILENESS DIFFICILITATE DIFFICULTNESS DIFFIDENTNESS DIFFRACTIONAL DIFFRACTIVELY DIFFUSIBILITY DIFFUSIOMETER DIFFUSIVENESS DISAFFECTEDLY DISAFFECTIONS DISAFFILIATED DISAFFILIATES DISAFFIRMANCE EFFECTIVENESS EFFECTUALNESS EFFERVESCENCE EFFERVESCENCY EFFERVESCIBLE EFFICACIOUSLY EFFLORESCENCE EFFLORESCENCY EFFORTFULNESS EQUIDIFFERENT EXTRAOFFICIAL HASSENPFEFFER INAFFECTATION INDIFFERENTLY INEFFABLENESS INEFFECTIVELY INEFFECTUALLY INEFFICACIOUS INEFFICIENTLY INOFFENSIVELY INOFFICIOSITY INOFFICIOUSLY INSUFFICIENCE INSUFFICIENCY INTERDIFFUSED JEFFERSONIANS KAFFEEKLATSCH LONGSUFFERING NITROPARAFFIN NONAFFILIATED NONAFFINITIES NONAFFINITIVE NONAFFIRMANCE NONDIFFIDENCE NONDIFFUSIBLE NONDIFFUSIBLY NONEFFETENESS NONEFFICIENCY NONEFFUSIVELY NONOFFICIALLY NONSUFFERABLE NONSUFFERABLY NONSUFFERANCE OFFENCELESSLY OFFENSELESSLY OFFENSIVENESS OFFHANDEDNESS OFFICEHOLDERS OFFICIALITIES OFFICIALIZING OFFICIOUSNESS OVERDIFFUSELY OVERDIFFUSING OVERDIFFUSION OVEROFFENSIVE OVEROFFICERED OVEROFFICIOUS OVERSTIFFNESS PARAFFINIZING PLAINTIFFSHIP PREAFFILIATED PREAFFLICTION PREDIFFICULTY PREOFFICIALLY PRESUFFICIENT RAFFLESIACEAE RAGAMUFFINISM REAFFILIATING REAFFILIATION REAFFIRMATION REINDIFFERENT SCOFFINGSTOCK SEMISTIFFNESS SPIFFLICATION STANDOFFISHLY STIFFNECKEDLY STUFFGOWNSMAN SUBAFFLUENTLY SUBOFFICIALLY SUFFICIENCIES SUFFICINGNESS SUFFOCATINGLY SUFFRAGANEOUS SUFFRAGETTISM SUFFRUTESCENT SUFFUMIGATING SUFFUMIGATION SUPERAFFLUENT SUPERAFFUSION SUPEREFFLUENT TARIFFICATION TSCHEFFKINITE UNAFFABLENESS UNAFFECTATION UNAFFECTIONED UNAFFILIATION UNAFFIRMATION UNAFFLICTEDLY UNCHAUFFEURED UNDEROFFICIAL UNDERSTUFFING UNDIFFERENCED UNDIFFERENTLY UNDIFFICULTLY UNDIFFIDENTLY UNDIFFRACTIVE UNDIFFUSIVELY UNEFFECTIVELY UNEFFECTUALLY UNEFFECTUATED UNEFFEMINATED UNEFFICACIOUS UNEFFULGENTLY UNINDIFFERENT UNOFFENDINGLY UNOFFENSIVELY UNOFFICERLIKE UNOFFICIALDOM UNOFFICIATING UNOFFICIOUSLY UNRUFFLEDNESS UNSUFFICIENCE UNSUFFICIENCY UNSUFFOCATIVE VIVIDIFFUSION