There are 613 twelve-letter words containing A, E, L, O and U, https://www.bestwordlist.com/c/a/5/12letterwordswithaelou.htm ABSOLUTENESS ABSTEMIOUSLY ACCOUPLEMENT ACHLAMYDEOUS ACOLOUTHITES ACOLOUTHOSES ACROGENOUSLY ADULTERATION ADULTERATORS ADULTEROUSLY AERONAUTICAL AGGLUTINOGEN AGRANULOCYTE AILOUROPHILE AILOUROPHOBE AILUROPHILES AILUROPHOBES AKOLOUTHOSES ALLOSAURUSES AMBULATORIES AMINOTOLUENE AMPHICOELOUS AMPULLACEOUS ANDOUILLETTE ANEMOPHILOUS ANEUPLOIDIES ANTINUCLEONS ANTIPETALOUS ANTISEPALOUS ARGILLACEOUS AUTECOLOGIES AUTHORISABLE AUTHORIZABLE AUTOCATALYSE AUTOCATALYZE AUTOCEPHALIC AUTOCOMPLETE AUTOECIOUSLY AUTOGENOUSLY AUTOPLASTIES AUTOSAMPLERS BARRELHOUSES BARRETROUSLY BATTLEGROUND BEAUJOLAISES BECLAMOURING BEGLAMOURING BIOMOLECULAR BLABBERMOUTH BOASTFULNESS BOATBUILDERS BOULEVARDIER BOUNDARYLESS BREASTPLOUGH BUFFALOBERRY CADAVEROUSLY CALCAREOUSLY CALLIBOGUSES CALYCOIDEOUS CAPILLACEOUS CARILLONNEUR CATALOGUISED CATALOGUISES CATALOGUIZED CATALOGUIZES CAULIFLORIES CAULIFLOWERS CEDRELACEOUS CHELUVIATION COACHBUILDER COCKABULLIES COCULTIVATED COCULTIVATES COELUROSAURS COEQUALITIES COETANEOUSLY COLLIQUATIVE COLOURCASTED COLOURWASHED COLOURWASHES COMMUNALISED COMMUNALISER COMMUNALISES COMMUNALIZED COMMUNALIZER COMMUNALIZES COMMUNICABLE COMPOUNDABLE COMPULSATIVE CONCEPTUALLY CONDUPLICATE CONFABULATED CONFABULATES CONFOUNDABLE CONGLOBULATE CONGLUTINATE CONGRATULATE CONSENSUALLY CONSULTATIVE CONSUMMATELY CONTEXTUALLY CONTRASEXUAL CONTUBERNYAL CONVENTUALLY COPULATIVELY CORALLACEOUS COROLLACEOUS COUNSELLABLE COUNTERBLAST COUNTERCLAIM COUNTERPLANS COUNTERPLAYS COUNTERPLEAD COUNTERPLEAS COUNTERRALLY COUNTERSEALS COUNTERVAILS COUNTERVALUE COURAGEOUSLY CRENULATIONS CRETACEOUSLY CUPELLATIONS CURVACEOUSLY CURVIFOLIATE CUSTOMISABLE CUSTOMIZABLE DEAMBULATORY DECUMULATION DEFLOCCULANT DEFLOCCULATE DEMODULATING DEMODULATION DEMODULATORS DEPLUMATIONS DEPOPULATING DEPOPULATION DEPOPULATORS DEREGULATION DEREGULATORS DEREGULATORY DEUTEROPLASM DEUTOPLASMIC DEUTOPLASTIC DEVALUATIONS DISCOUNTABLE DISMOUNTABLE DOCUMENTABLE DOUBLEHANDED DOUBLEHEADER DOUBLESPEAKS DOULOCRACIES DRUNKALOGUES DUODECENNIAL DUODECIMALLY EDULCORATING EDULCORATION EDULCORATIVE EDULCORATORS EJACULATIONS ELOCUTIONARY ELUCIDATIONS ELUCUBRATION ELUTRIATIONS EMASCULATION EMASCULATORS EMASCULATORY EMOLUMENTARY ENDONUCLEASE ENUCLEATIONS EQUALISATION EQUALIZATION EQUANIMOUSLY EQUATIONALLY EQUATORIALLY EQUILIBRATOR EQUINOCTIALS EQUIPROBABLE EQUIVOCALITY EUCALYPTOLES EULOGISTICAL EUPHONICALLY EUPHORICALLY EUROTERMINAL EVOLUTIONARY EXALBUMINOUS EXCLUSIONARY EXCULPATIONS EXONUCLEASES EXOPHTHALMUS EXPOSTULATED EXPOSTULATES EXPOSTULATOR EXSUFFLATION EXTRANEOUSLY EXULCERATION FABULOSITIES FABULOUSNESS FLAMMIFEROUS FLATTEROUSLY FLUCONAZOLES FLUORAPATITE FLUTTERBOARD FLUVIOMARINE FLUVOXAMINES FOLLICULATED FORMULARISED FORMULARISER FORMULARISES FORMULARIZED FORMULARIZER FORMULARIZES FOUNTAINLESS FOURSQUARELY FURAZOLIDONE GALACTAGOGUE GALLINACEOUS GAMOPETALOUS GAMOSEPALOUS GELATINOUSLY GEMMULATIONS GENICULATION GESTICULATOR GLABROUSNESS GLANDIFEROUS GLAUCOUSNESS GLOBULARNESS GLUCOKINASES GLUCOSAMINES GLUCOSIDASES GLUTATHIONES GRAMMALOGUES GRANULOCYTES GREGARIOUSLY GROSSULARITE HALLUCINOGEN HALLUCINOSES HELIOGRAVURE HELIOLATROUS HELLACIOUSLY HERBACEOUSLY HETEROSEXUAL HEXAFLUORIDE HOMOLOGUMENA HOMOSEXUALLY HOUSECLEANED HYPERAROUSAL HYPOSULPHATE ILLAQUEATION INCOAGULABLE INCOMMUTABLE INCOMPUTABLE INCONSUMABLE INOPERCULATE INTERLOBULAR ITACOLUMITES JEALOUSHOODS JEOPARDOUSLY JOCULARITIES JOURNALISERS JOURNALIZERS KAMELAUKIONS LABOUREDNESS LACQUERWORKS LACUNOSITIES LANGOUSTINES LATICIFEROUS LAUNDRYWOMEN LEATHERBOUND LEPROSARIUMS LEUCAEMOGENS LEUCITOHEDRA LEUCODERMIAS LEUCOPLAKIAS LEUCOPLASTID LEUCORRHOEAL LEUCORRHOEAS LEUKAEMOGENS LEUKOPLAKIAS LIQUEFACTION LOATHFULNESS LOGANIACEOUS LOGODAEDALUS LOMENTACEOUS LONGICAUDATE LOUDSPEAKERS LUCKENGOWANS MACRONUCLEAR MACRONUCLEUS MAGNILOQUENT MALNOURISHED MALONYLUREAS MANOEUVRABLE MARVELLOUSLY MEALYMOUTHED MEGALOSAURUS MELLIPHAGOUS MEMBRANOUSLY MENDACIOUSLY METHAQUALONE METROSEXUALS MICROCAPSULE MILQUETOASTS MISCATALOGUE MODULARITIES MOLECULARITY MONADELPHOUS MONONUCLEARS MONONUCLEATE MONOPETALOUS MONOSEPALOUS MONUMENTALLY MOTONEURONAL MULTICOSTATE MULTIFOLIATE MULTIMEGATON MUSEOLOGICAL MUZZLELOADER NEBULISATION NEBULIZATION NEUROHUMORAL NEUROLOGICAL NEUROTICALLY NEUROTYPICAL NEURULATIONS NOMENCLATURE NOMENKLATURA NONCRUSHABLE NONFACULTIES NONLANGUAGES NONMERCURIAL NONMOLECULAR NONNUCLEATED NONNUMERICAL NONREGULATED NONUNIVERSAL NOTOUNGULATE NOTUNGULATES NOUMENALISMS NOUMENALISTS NUCLEOCAPSID NUCLEOPLASMS NUCLEOTIDASE OCTOPETALOUS OCTOSEPALOUS OCTUPLICATES OLEAGINOUSLY ORACULARNESS ORICHALCEOUS OSCULATORIES OUTGENERALED OUTPLACEMENT OUTPOPULATED OUTPOPULATES OUTRAGEOUSLY OUTTRAVELING OUTTRAVELLED OUTVILLAINED OVERAROUSALS OVEREVALUATE OVERLABOURED OVERLAUNCHED OVERLAUNCHES OVERPOPULATE OVERREGULATE OVERSLAUGHED OXYCEPHALOUS PAMPELMOUSES PAPULIFEROUS PASQUEFLOWER PASTOURELLES PATULOUSNESS PAUCILOQUENT PEDICULATION PELARGONIUMS PERAMBULATOR PERCUSSIONAL PETALIFEROUS PHLEGMAGOGUE PHOTONUCLEAR PLATANACEOUS PLEIOCHASIUM PLEURODYNIAS PLOUGHSHARES PLUMULACEOUS PLUTOCRACIES PLUTOLATRIES PNEUMATOLOGY PNEUMOCOCCAL POLYANTHUSES POLYCHAETOUS POLYNUCLEATE POLYPETALOUS POLYSEPALOUS POLYURETHANE POLYURETHANS POPULARISERS POPULARITIES POPULARIZERS PORCELAINOUS PORCELANEOUS PORCELLANOUS POSTPUBERTAL POSTULANCIES PREADULTHOOD PRECARIOUSLY PRECAUTIONAL PREFORMULATE PREOVULATORY PRIMULACEOUS PROCEDURALLY PROCONSULATE PROSECUTABLE PROTHALLUSES PSEUDOALLELE PSEUDOLOGIAS PSEUDOPODIAL PSEUDOSCALAR PSYCHOSEXUAL PTYALAGOGUES PUFTALOONIES PULVERATIONS PYROSULPHATE QUESTIONABLE QUESTIONABLY QUOTABLENESS RADIOLUCENCY RADIONUCLIDE RAMBOUILLETS RAMPAGEOUSLY RATATOUILLES RECATALOGUED RECATALOGUES REEVALUATION REFORMULATED REFORMULATES REINOCULATED REINOCULATES RELUCTATIONS RENOUNCEABLE RENOVASCULAR REPOPULARISE REPOPULARIZE REPOPULATING REPOPULATION REPUTATIONAL REREGULATION RETICULATION RETROSEXUALS REVALUATIONS REVOLUTIONAL REVULSIONARY RHEUMATOLOGY RIBONUCLEASE SABULOSITIES SACRILEGIOUS SALSOLACEOUS SALUTATORIES SALUTIFEROUS SANGUINOLENT SANSCULOTTES SANTALACEOUS SCHORLACEOUS SCOLOPACEOUS SCROBICULATE SCUTELLATION SEMIGLOBULAR SEQUACIOUSLY SERRULATIONS SHUFFLEBOARD SILIQUACEOUS SIMULTANEOUS SLANDEROUSLY SLAUGHTEROUS SMILACACEOUS SOMATOPLEURE SOMERSAULTED SOMNAMBULATE SOUTHLANDERS SPECIALOGUES SPECULATIONS STIPULACEOUS SUBALLOCATED SUBALLOCATES SUBEDITORIAL SUBLINEATION SUBMONTANELY SUBOPERCULAR SUBVOCALISED SUBVOCALISES SUBVOCALIZED SUBVOCALIZES SUCCESSIONAL SULFADOXINES SULFONAMIDES SULFONYLUREA SULFORAPHANE SULPHADOXINE SULPHONAMIDE SUPERFRONTAL SUPERORDINAL SUPEROVULATE SUPERPOSABLE SURMOUNTABLE SUSPENSORIAL TAUTOLOGISED TAUTOLOGISES TAUTOLOGIZED TAUTOLOGIZES TEASPOONFULS TEASPOONSFUL TELEOSAURIAN TENUIROSTRAL TETRAZOLIUMS THIOSULFATES THIOSULPHATE TIBIOFIBULAE TOLBUTAMIDES TRIADELPHOUS TRICEPHALOUS TRIMOLECULAR TROUBLEMAKER TUBERCULOMAS TUBOPLASTIES ULTRAMONTANE ULTRASERIOUS ULTRAVIOLENT ULTRAVIOLETS UMBRAGEOUSLY UNAFFORDABLE UNAPOLOGETIC UNCATALOGUED UNCOALESCING UNCOMEATABLE UNCOMMERCIAL UNCOMPLACENT UNCOMPOSABLE UNCONCEALING UNCONFINABLE UNCONGEALING UNCORRELATED UNDEFOLIATED UNDERLOADING UNECOLOGICAL UNECONOMICAL UNELABORATED UNEMPLOYABLE UNEROTICALLY UNFATHOMABLE UNFAVOURABLE UNFORGIVABLE UNFORMALISED UNFORMALIZED UNFORMIDABLE UNFORMULATED UNGLAMORISED UNGLAMORIZED UNGOVERNABLE UNGOVERNABLY UNHANDSOMELY UNHEROICALLY UNHOSPITABLE UNIFOLIOLATE UNIMOLECULAR UNINOCULATED UNMETHODICAL UNMODIFIABLE UNMORALITIES UNNEGOTIABLE UNNOTICEABLE UNNOTICEABLY UNOBSERVABLE UNOBTAINABLE UNORNAMENTAL UNPARDONABLE UNPAVILIONED UNPOETICALLY UNPOLISHABLE UNPROCEDURAL UNPROCLAIMED UNPROCURABLE UNPROFITABLE UNREASONABLE UNREASONABLY UNRECKONABLE UNREFORMABLE UNREPORTABLE UNREPROVABLE UNRESOLVABLE UNRESOLVABLY UNRHETORICAL UNSAILORLIKE UNSEASONABLE UNSEASONABLY UNSHADOWABLE UNSOCIALISED UNSOCIALIZED UNSUPPOSABLE UNTOUCHABLES UNVOYAGEABLE UNWOMANLIEST URBANOLOGIES URINOGENITAL UROLITHIASES VARICOLOURED VENTRILOQUAL VESICULATION VOCABULARIED VOCABULARIES VOLUMETRICAL VOLUNTATIVES VOLUPTUARIES VULNERATIONS WATERCOLOURS