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