There are 609 eleven-letter words containing A, E, F and N, https://www.bestwordlist.com/c/a/4/11letterwordswithaefn.htm ACRIFLAVINE AFFECTATION AFFECTINGLY AFFECTIONAL AFFECTIONED AFFEERMENTS AFFIRMANCES AFFLUENCIES AFFLUENTIAL AFFORCEMENT AFFORESTING AFFRANCHISE AFFRIGHTENS AFTERBRAINS AFTERBURNER AFTEREYEING AIRCRAFTMEN ALOOFNESSES ANGELFISHES ANGUIFAUNAE ANTENNIFORM ANTIFATIGUE ANTIFEBRILE ANTIFOREIGN ANTIFREEZES ANTIWELFARE AQUAFITNESS AREFACTIONS AWFULNESSES BAFFLEMENTS BALEFULNESS BANEFULNESS BASHFULNESS BATTLEFRONT BEACHFRONTS BEAUTIFYING BEDEAFENING BENEFACTING BENEFACTION BENEFACTORS BENEFACTORY BENEFICIALS BENEFICIARY BENEFICIATE BENZOFURANS BRANFULNESS BREAKFRONTS CAFFEINATED CAFFEINATES CAFFEINISMS CALEFACIENT CALEFACTION CAREFULNESS CEFTRIAXONE CENTRIFUGAL CHAFFINCHES CHANGEFULLY CHIEFTAINCY CHIEFTAINRY CHIFFONADES CLIFFHANGER CODEFENDANT COFEATURING CONFABULATE CONFARREATE CONFEDERACY CONFEDERATE CONFERRABLE CONFESSABLE CONFESSANTS CONFIDANTES CONFIGURATE CONFINEABLE CONFIRMABLE CONFISCABLE CONFISCATED CONFISCATES CONFLAGRATE CONFORMABLE CONFORMANCE CONFUSABLES CONFUTATIVE COTRANSFERS CRAFTSWOMEN CRESTFALLEN DAFFINESSES DANDRUFFIER DEADLIFTING DEAFENINGLY DEFACEMENTS DEFAECATING DEFAECATION DEFALCATING DEFALCATION DEFAMATIONS DEFEASANCED DEFEASANCES DEFEATURING DEFECATIONS DEFENSATIVE DEFERENTIAL DEFIANTNESS DEFIBRINATE DEFILIATION DEFINIENTIA DEFLEXIONAL DEFLORATING DEFLORATION DEFOLIATING DEFOLIATION DEFORCIANTS DEFORMATION DEFRAGGINGS DEFRAGMENTS DEFRAUDMENT DEFRAYMENTS DEIFICATION DENAZIFYING DIFFERENTIA DRAFTSWOMEN DRAGONFLIES DWARFNESSES EASEFULNESS EDIFICATION EFFACEMENTS EFFEMINATED EFFEMINATES ENDOSULFANS ENFACEMENTS ENFLEURAGES ENFORCEABLE ENFRAMEMENT ENFRANCHISE ENGRAFTMENT ENTOMOFAUNA EQUIFINALLY EXFOLIATING EXFOLIATION FACEBOOKING FACELIFTING FACEPALMING FACEPLANTED FACINERIOUS FACTUALNESS FACUNDITIES FADDINESSES FADDISHNESS FADEDNESSES FAINEANCIES FAINEANTISE FAINTNESSES FAIRNITICLE FAIRNYTICLE FALDERALING FALSENESSES FALTERINGLY FAMISHMENTS FANATICISED FANATICISES FANATICIZED FANATICIZES FANCINESSES FANFARONADE FANTASISERS FANTASIZERS FANTASTRIES FARAWAYNESS FAREWELLING FARINACEOUS FARNARKELED FARRANDINES FARTHINGALE FASCINATIVE FASHIONABLE FASHIONIEST FATALNESSES FATEFULNESS FATHERLANDS FATISCENCES FATTINESSES FATUOUSNESS FAULTFINDER FAVOREDNESS FAWNINGNESS FAZENDEIROS FEARFULNESS FEARMONGERS FEARNAUGHTS FEARNOUGHTS FEATHERINGS FECUNDATING FECUNDATION FECUNDATORS FECUNDATORY FEDERATIONS FENESTELLAE FENESTELLAS FENESTRATED FENESTRATES FERMENTABLE FERRANDINES FERRICYANIC FERRIMAGNET FERROCYANIC FERROMAGNET FERTIGATING FERTIGATION FESTINATELY FESTINATING FESTINATION FEUDALISING FEUDALIZING FIANCAILLES FIANCHETTOS FILAGREEING FILAMENTARY FILAMENTOUS FINABLENESS FINANCIERED FINASTERIDE FINGERBOARD FINGERGLASS FINGERGUARD FINGERMARKS FINGERNAILS FINGERPLATE FINGERPLAYS FINGERSTALL FINICALNESS FIREBALLING FIREDRAGONS FIREFANGING FIRESCAPING FIREWALLING FIREWARDENS FIRMAMENTAL FISHERWOMAN FISSIONABLE FLACCIDNESS FLAGELLANTS FLAGRANCIES FLAKINESSES FLAMBOYANCE FLAMBOYANTE FLANCONADES FLANNELETTE FLANNELLIER FLANNELLING FLATLANDERS FLATSCREENS FLATULENCES FLATULENTLY FLAUNTINESS FLEXITARIAN FLINDERSIAS FLIPPANCIES FLOATPLANES FLUCONAZOLE FLUORINATED FLUORINATES FLUVOXAMINE FOAMINESSES FOMENTATION FONTANELLES FOOTBALLENE FORAMINATED FORAMINIFER FORBEARANCE FORBIDDANCE FORECASTING FOREHANDING FOREMANSHIP FOREMASTMAN FOREMASTMEN FOREMEANING FOREORDAINS FOREPAYMENT FOREPLANNED FOREREADING FORESTATION FORESTLANDS FORETASTING FOREWARDING FOREWARNERS FOREWARNING FORSPEAKING FORSWEARING FORTEPIANOS FORTUNATELY FORWANDERED FORWARDNESS FORWEARYING FRACTIONATE FRACTIONISE FRACTIONIZE FRACTIONLET FRAGILENESS FRAGMENTARY FRAGMENTATE FRAGMENTING FRAGMENTISE FRAGMENTIZE FRAGRANCIES FRAILNESSES FRANCHISEES FRANCHISERS FRANCOPHILE FRANCOPHOBE FRANCOPHONE FRANGIPANES FRANKFURTER FRANKLINITE FRANKNESSES FRANKPLEDGE FRANTICNESS FRATERNALLY FRATERNISED FRATERNISER FRATERNISES FRATERNIZED FRATERNIZER FRATERNIZES FRAUDULENCE FRAUDULENCY FRAXINELLAS FREEGANISMS FREELANCERS FREELANCING FREELOADING FREEMARTINS FREEMASONIC FREEMASONRY FRIABLENESS FRICANDEAUS FRICANDEAUX FROWARDNESS FUNAMBULATE FUNCTIONATE FUNDAMENTAL FUNDRAISERS FURANOSIDES FURTHERANCE FUSTANELLAS FUSTANELLES FUSTIANISED FUSTIANISES FUSTIANIZED FUSTIANIZES GAINFULNESS GAUFFERINGS GLADFULNESS GODFORSAKEN GONFALONIER GRAINFIELDS GRANDFATHER GUANIFEROUS HALFENDEALE HALFPENNIES HALLEFLINTA HANDCRAFTED HANDFEEDING HARMFULNESS HATEFULNESS HEREINAFTER INCREASEFUL INDEFINABLE INDEFINABLY INEFFECTUAL INFALLIBLES INFAMONISED INFAMONISES INFAMONIZED INFAMONIZES INFANGTHIEF INFANTICIDE INFANTILISE INFANTILIZE INFANTRYMEN INFERENTIAL INFERNALITY INFESTATION INFEUDATION INFIBULATED INFIBULATES INFIELDSMAN INFILTRATED INFILTRATES INFINITATED INFINITATES INFIRMARERS INFIRMARIES INFLAMMABLE INFLATABLES INFLECTABLE INFLEXIONAL INFLICTABLE INFLUENTIAL INFOMERCIAL INFORMATISE INFORMATIVE INFORMATIZE INFRANGIBLE INFRAORDERS INFURIATELY INGRAFTMENT INSUFFLATED INSUFFLATES INTERFACIAL INTERFACING INTERFAMILY INTERGRAFTS INTREATFULL ISOFLAVONES KLANGFARBES LABEFACTION LADYFINGERS LANGLAUFERS LEAFINESSES LEAFLETTING LIFEBOATMAN LIFEBOATMEN LIFEHACKING LIFEMANSHIP LIFESAVINGS MACROFAUNAE MADEFACTION MAGNIFIABLE MAGNIFICENT MAGNIFICOES MALEFACTION MALEFICENCE MALFEASANCE MALFEASANTS MANIFESTANT MANIFESTERS MANIFESTING MANIFESTOED MANIFESTOES MANIFOLDERS MANNIFEROUS MANTELSHELF MANUFACTURE METAFICTION METRIFONATE MICROFAUNAE MISFEASANCE MYOFILAMENT NEEDLECRAFT NEFARIOUSLY NEWSFLASHES NIDIFICATED NIDIFICATES NITRIFIABLE NONAFFLUENT NONFAMILIES NONFEASANCE OCEANFRONTS OFFHANDEDLY OUTFEASTING OVERFALLING OVERFEARING OVERINFLATE PAINFULLEST PAINFULNESS PALFRENIERS PARAFFINIER PATHFINDERS PERFORANSES PERFORATING PERFORATION PERFORMANCE PIANOFORTES PINFEATHERS PISCIFAUNAE PLAYFULNESS PONTIFICATE PREFINANCED PREFINANCES PREFRANKING PREFRESHMAN PREFRONTALS PRESANCTIFY PROFANENESS PROFANITIES QUANTIFIERS QUEENCRAFTS RAFFISHNESS RAINFORESTS RAINPROOFED RALOXIFENES RANGEFINDER RANKSHIFTED RAREFACTION REAEDIFYING REAFFIRMING REDEFEATING REFASHIONED REFASTENING REFECTORIAN REFERENDARY REFERENTIAL REFINANCING REFLECTANCE REFLEXIONAL REFORMATION REFRACTIONS REFRAINMENT REFRANGIBLE REFRIGERANT REFUTATIONS REIFICATION REINFLAMING REINFLATING REINFLATION REPACIFYING RESURFACING RETRANSFERS RETRANSFORM RETRANSFUSE RIBOFLAVINE RIFACIMENTI RIFACIMENTO RUBEFACIENT RUBEFACTION SAFEKEEPING SAFFRONIEST SANCTIFIERS SAPONIFIERS SATINFLOWER SCREENCRAFT SIGNIFIABLE SIGNIFICATE SILDENAFILS SINFONIETTA SNAILFISHES SNAKEFISHES SPACEFARING SUBAFFLUENT SUBFRAGMENT SUFFERANCES SUFFIGANCES SUFFISANCES SULFADOXINE SULFONAMIDE TABEFACTION TACTFULNESS TAENIAFUGES TANGLEFOOTS TEARFULNESS TEASPOONFUL TECHNOFEARS TEPEFACTION THANKFULLER TRANSFECTED TRANSFERALS TRANSFERASE TRANSFEREES TRANSFERORS TRANSFERRAL TRANSFERRED TRANSFERRER TRANSFERRIN TRANSFIGURE TRANSFINITE TRANSFORMED TRANSFORMER TRANSFUSERS TRANSFUSIVE TUMEFACIENT TUMEFACTION UNAFFECTING UNAMPLIFIED UNBEAUTIFUL UNCALCIFIED UNCLARIFIED UNDEFINABLE UNFALTERING UNFASHIONED UNFASTENING UNFAULTIEST UNFAVORABLE UNFAVOURITE UNFEARFULLY UNFEATHERED UNFEUDALISE UNFEUDALIZE UNFILTRABLE UNFLAPPABLE UNFLASHIEST UNFLAVOURED UNFORMATTED UNFORTUNATE UNFRAUGHTED UNGRATIFIED UNHEALTHFUL UNMAGNIFIED UNQUALIFIED UNQUALIFIES UNREFRACTED UNSATISFIED UNSTEADFAST VENEFICALLY VOCIFERANCE VOCIFERANTS WAKEFULNESS WATERFINDER WATERFRONTS WHARFINGERS YAFFINGALES