There are 762 twelve-letter words containing 2A, D and E, https://www.bestwordlist.com/c/a/4/12letterwordswithaade.htm
ABANDONMENTS ABANDONWARES ABECEDARIANS ABSINTHIATED ABSTRACTEDLY
ACADEMICALLY ACADEMICIANS ACADEMICISMS ACCELERANDOS ACCIDENTALLY
ACCLIMATISED ACCLIMATIZED ACCOMMODABLE ACCOMMODATED ACCOMMODATES
ACCORDANCIES ACCREDITABLE ACCULTURATED ACETALDEHYDE ACETANILIDES
ACHLAMYDEOUS ACHROMATISED ACHROMATIZED ACIDANTHERAS ACQUITTANCED
ADAPTIVENESS ADAPTIVITIES ADENOPATHIES ADEQUATENESS ADJECTIVALLY
ADJUDICATIVE ADJUSTMENTAL ADMINICULATE ADMINISTRATE ADORABLENESS
ADULARESCENT ADULTERATING ADULTERATION ADULTERATORS ADVANCEMENTS
ADVANTAGEOUS ADVERBIALISE ADVERBIALIZE ADVERGAMINGS ADVERSATIVES
ADVERTORIALS AERODYNAMICS AFFRANCHISED AGGLOMERATED AGGLUTINATED
AGGRANDISERS AGGRANDIZERS AGUARDIENTES ALDERMANLIER ALDERMANLIKE
ALDERMANRIES ALDERMANSHIP ALEXANDERSES ALEXANDRINES ALEXANDRITES
ALPHABETISED ALPHABETIZED AMAZEDNESSES AMBASSADRESS AMPHIDENTATE
ANECDOTALISM ANECDOTALIST ANIMADVERTED ANIMADVERTER ANTEDILUVIAL
ANTEDILUVIAN ANTEMERIDIAN ANTEPRANDIAL ANTIACADEMIC ANTIADITISES
ANTIANDROGEN ANTICATHODES ANTIDIABETIC ANTIPREDATOR APODEICTICAL
APPENDICULAR APPROPRIATED APPROXIMATED ARABINOSIDES ARCHDEACONRY
ARCHDIOCESAN ARQUEBUSADES ARTERIALISED ARTERIALIZED ASCENDANCIES
ASSAFOETIDAS ASSASSINATED ASSUBJUGATED ASTEROIDEANS ATTENDANCIES
AVERRUNCATED BACKGAMMONED BACKHANDEDLY BACKPEDALING BACKPEDALLED
BACKWARDNESS BACTERICIDAL BALDERDASHES BALLADEERING BALLADMONGER
BANDEIRANTES BANDERSNATCH BARDOLATRIES BARRAMUNDIES BASTARDLIEST
BEADBLASTERS BEADBLASTING BEAVERBOARDS BLACKGUARDED BLACKHANDERS
BLACKLEADING BLADDERWRACK BRADYKINESIA BREADBASKETS BREADBOARDED
BREAKDANCERS BREAKDANCING BREATHALYSED BREATHALYZED BROADCASTERS
CACKERMANDER CADAVEROUSLY CAESALPINOID CALCULATEDLY CALENDARISED
CALENDARISES CALENDARISTS CALENDARIZED CALENDARIZES CALLIGRAPHED
CAMARADERIES CAMELEOPARDS CANDELABRUMS CANDIDATURES CANNIBALISED
CANNIBALIZED CANNONBALLED CARBAMIDINES CARBOHYDRASE CARBOHYDRATE
CARBONYLATED CARBOXYLATED CARDBOARDIER CARDINALATES CARDIOMEGALY
CARDIOPLEGIA CARDSHARPERS CARPETBAGGED CARUNCULATED CATALOGUISED
CATALOGUIZED CEPHALOPODAN CHAMBERHANDS CHAMBERMAIDS CHANGEAROUND
CHOREODRAMAS CLAIRAUDIENT CLAPPERBOARD COLLABORATED COMPAGINATED
CONCATENATED CONFABULATED CONFLAGRATED CONTAMINATED CONTRADANCES
CRACKBRAINED CRANKHANDLES CURVICAUDATE CYCLANDELATE CYCLOPAEDIAS
DAGGERBOARDS DAMASCEENING DAMASCENINGS DAMASKEENING DAMNABLENESS
DARRAIGNMENT DASTARDLIEST DAYDREAMIEST DAYDREAMINGS DAYDREAMLIKE
DEACTIVATING DEACTIVATION DEACTIVATORS DEALBREAKERS DEAMBULATORY
DEAMINATIONS DEARTICULATE DEASPIRATING DEASPIRATION DEATHWATCHES
DEBARCATIONS DEBARKATIONS DEBARRASSING DECAFFEINATE DECAHYDRATES
DECALCOMANIA DECANTATIONS DECAPITALISE DECAPITALIZE DECAPITATING
DECAPITATION DECAPITATORS DECAPSULATED DECAPSULATES DECARBONATED
DECARBONATES DECARBONATOR DECASUALISED DECASUALISES DECASUALIZED
DECASUALIZES DECASYLLABIC DECASYLLABLE DECLAMATIONS DECLARATIONS
DEDICATIONAL DEDICATORIAL DEDRAMATISED DEDRAMATISES DEDRAMATIZED
DEDRAMATIZES DEEPWATERMAN DEFAECATIONS DEFALCATIONS DEFAMATORILY
DEFLAGRATING DEFLAGRATION DEFLAGRATORS DEFLATIONARY DEFRAUDATION
DEGLACIATION DEGRADATIONS DELAMINATING DELAMINATION DEMARCATIONS
DEMARKATIONS DEMOCRATICAL DEMONIACALLY DEMONOMANIAS DENATURALISE
DENATURALIZE DENATURATION DENDRACHATES DEPARTMENTAL DEPAUPERATED
DEPAUPERATES DEPRAVATIONS DERACIALISED DERACIALISES DERACIALIZED
DERACIALIZES DERACINATING DERACINATION DERIVATIONAL DERMABRASION
DERMAPLANING DERMAPTERANS DESACRALISED DESACRALISES DESACRALIZED
DESACRALIZES DESALINATING DESALINATION DESALINATORS DESATURATING
DESATURATION DESQUAMATING DESQUAMATION DESQUAMATIVE DESQUAMATORY
DEUTERANOPIA DEVALUATIONS DEVASTATIONS DEXTROCARDIA DIAGNOSEABLE
DIAGONALISED DIAGONALISES DIAGONALIZED DIAGONALIZES DIAGRAMMABLE
DIALECTICIAN DIAMAGNETISM DIATESSARONS DIATHERMANCY DIATOMACEOUS
DIAZOMETHANE DIBRANCHIATE DICARPELLARY DILACERATING DILACERATION
DISACCHARIDE DISADVANTAGE DISAFFILIATE DISAGGREGATE DISAGREEABLE
DISAGREEABLY DISALLOWABLE DISALLOWANCE DISAMBIGUATE DISANALOGIES
DISAPPEARING DISARMAMENTS DISASSOCIATE DISCALCEATES DISEMBARRASS
DISPLACEABLE DISPLEASANCE DISPLEASANTS DISTRACTABLE DISTRAINABLE
DIVARICATELY DODECAGYNIAN DODECAHEDRAL DORSOLATERAL DOWNLOADABLE
DRACONTIASES DRAMATISABLE DRAMATIZABLE DRAMATURGIES DRAPEABILITY
DREADNAUGHTS DUNIEWASSALS DUNNIEWASSAL DYSAESTHESIA DYSPAREUNIAS
EMBARCADEROS EMPARADISING ENARTHRODIAL ENCAPSULATED ENCARNALISED
ENCARNALIZED ENDAMAGEMENT ENDOPARASITE ENDOTRACHEAL ENGARLANDING
EQUIBALANCED ERADICATIONS EUTHANATISED EUTHANATIZED EXTRADITABLE
EXTRAMUNDANE EXTRAPOLATED EXTRAVAGATED EXTRAVASATED FAINTHEARTED
FAMILIARISED FAMILIARIZED FANFARONADED FANFARONADES FASCICULATED
FASCINATEDLY FEATHERHEADS FLANNELBOARD FOUNTAINHEAD FRACTIONATED
FRAGMENTATED FUNAMBULATED FUNDAMENTALS GALACTOSIDES GALLBLADDERS
GALLIARDISES GALRAVITCHED GANGLIONATED GANGSTERLAND GEODYNAMICAL
GLASSPAPERED GLASSYHEADED GRADABLENESS GRADUALITIES GRADUATESHIP
GRANDDADDIES GRANDFATHERS GRANDMASTERS GRANDPAPPIES GRANDPARENTS
GRANDSTANDED GRANDSTANDER GREATHEARTED HABERDASHERS HABERDASHERY
HAEMODYNAMIC HAEMORRHAGED HAIRBREADTHS HAIRSBREADTH HALFENDEALES
HALLUCINATED HAMMERHEADED HANDBREADTHS HANDICAPPERS HANDICRAFTER
HANDSBREADTH HARDHEADEDLY HARDSCRABBLE HARLEQUINADE HARUSPICATED
HEADBANGINGS HEADMASTERLY HEADQUARTERS HEADREACHING HEADTEACHERS
HEAVYHEARTED HEBDOMADALLY HENDECAGONAL HENDECAHEDRA HERALDICALLY
HEREDITARIAN HEXADACTYLIC HEXADECANOIC HEXADECIMALS HEXAGRAMMOID
HEXAHYDRATED HEXAHYDRATES HOLIDAYMAKER HOLLANDAISES HYDNOCARPATE
HYDRALAZINES HYDROMASSAGE HYPNOPAEDIAS HYRACOIDEANS IDEALISATION
IDEALIZATION IDEATIONALLY INADEQUACIES INADEQUATELY INCAPSULATED
INCARCERATED INCARDINATED INCARDINATES INCARNADINED INCARNADINES
INELABORATED INERADICABLE INERADICABLY INFATUATEDLY INSTAGRAMMED
INSTANTIATED INTERCALATED INTERSTADIAL INTRAMUNDANE IRRADIANCIES
JACKHAMMERED LABIODENTALS LABRADOODLES LABRADORITES LAGGARDLIEST
LAMPADEDROMY LANDAULETTES LANDGRAVATES LANDGRAVIATE LANDGRAVINES
LARGEHEARTED LAUDABLENESS LEADERBOARDS LEATHERHEADS LOADSAMONEYS
LOADSAMONIES LOGODAEDALIC LOGODAEDALUS LONGICAUDATE MACADAMISERS
MACADAMIZERS MACERANDUBAS MACHICOLATED MADEFACTIONS MADERISATION
MADERIZATION MADREPORIANS MAENADICALLY MAIDSERVANTS MAINSTREAMED
MAINTENANCED MALADDRESSES MALADJUSTIVE MANDARINATES MANDIBULATED
MANDIBULATES MANSPREADERS MANSPREADING MANUFACTURED MARGINALISED
MARGINALIZED MARISCHALLED MARIVAUDAGES MARSHLANDERS MARTELLANDOS
MASQUERADERS MASQUERADING MASSERANDUBA MATERIALISED MATERIALIZED
MATHEMATISED MATHEMATIZED MATRICULATED MEDIAEVALISM MEDIAEVALIST
MEDICAMENTAL MEGALOCARDIA MEGASTARDOMS MELODRAMATIC METASTASISED
METASTASIZED METHANAMIDES MICROMANAGED MISALLOCATED MISCATALOGED
MISDEMEANANT MISEVALUATED MULTIWARHEAD MURDERABILIA NAPHTHALISED
NAPHTHALIZED NARROWCASTED NATIONALISED NATIONALIZED NEANDERTALER
NEANDERTHALS NEOPAGANISED NEOPAGANIZED NIACINAMIDES NONACADEMICS
NONACTIVATED NONAUTOMATED NONCANDIDATE NONGRADUATES NORADRENALIN
OCTAHEDRALLY OUTBARGAINED OVERABUNDANT OVERANALYSED OVERANALYZED
OVERARRANGED OVERBALANCED OVERDRAMATIC OVERPACKAGED PACHYDERMIAS
PADDLEBOARDS PAEDERASTIES PAEDIATRISTS PAEDOBAPTISM PAEDOBAPTIST
PAEDOLOGICAL PAEDOPHILIAC PAEDOPHILIAS PALUDAMENTUM PANDAEMONIUM
PANDANACEOUS PANDEMONIANS PAPPARDELLES PARADOXURINE PARAHYDROGEN
PARALDEHYDES PARALLELISED PARALLELIZED PARAMEDICALS PARAMETRISED
PARAMETRIZED PARAPERIODIC PARAQUADRATE PARASCENDERS PARASCENDING
PARASITICIDE PARASPHENOID PARASUICIDES PARFOCALISED PARFOCALIZED
PARTICIPATED PASQUINADERS PASTURELANDS PEDANTICALLY PEDANTOCRACY
PEDANTOCRATS PEDIATRICIAN PEDICELLARIA PENTADACTYLE PENTADACTYLS
PENTADACTYLY PENTAHYDRATE PERAMBULATED PLANTIGRADES PLASMODESMAS
PLASTERBOARD POSTGRADUATE PREAMBULATED PREVARICATED PROCATHEDRAL
PROPAGANDISE PROPAGANDIZE PSEUDOSCALAR PTERIDOMANIA QUADRAPLEGIA
QUADRAPLEGIC QUADRATRICES QUADRATRIXES QUADRENNIALS QUADRIENNIAL
QUADRIPLEGIA QUADRIVALENT QUARTERSAWED RADICALITIES RADIESTHESIA
RADIOGRAPHED RADIOGRAPHER RADIOLABELED RADIOTHERAPY RADIOTRACERS
RALLENTANDOS RATIOCINATED RATIONALISED RATIONALIZED REACCLIMATED
REACQUAINTED READABLENESS READAPTATION READJUSTABLE READMITTANCE
REAGGREGATED REAPPARELLED REBROADCASTS RECALCULATED RECALIBRATED
RECATALOGUED REHYDRATABLE REINCARNATED REJONEADORAS RELANDSCAPED
RELANDSCAPES REMAINDERMAN RERADIATIONS RETARDANCIES RETARDATIONS
RETRANSLATED REVACCINATED REVALIDATING REVALIDATION RHABDOMANCER
RIJKSDAALERS SACCHARIFIED SACERDOTALLY SADDLEBACKED SAFEGUARDING
SAILBOARDERS SALAMANDRINE SALICYLAMIDE SALMAGUNDIES SANCTUARISED
SANCTUARIZED SANDBLASTERS SANDPAPERIER SANDPAPERING SAPINDACEOUS
SCABBARDLESS SCAFFOLDAGES SCALENOHEDRA SCANDALISERS SCANDALIZERS
SCARABAEOIDS SCARAMOUCHED SCRAPERBOARD SEMIPALMATED SHADOWCASTED
SHAMEFACEDLY SKATEBOARDED SKATEBOARDER SPEARHEADING SPREADEAGLED
STANDARDBRED STANDARDISED STANDARDISER STANDARDISES STANDARDIZED
STANDARDIZER STANDARDIZES STANDARDLESS STANDPATTERS STENOCARDIAS
STOMATODAEUM STRADDLEBACK STRANGULATED SUBALLOCATED SUBDEACONATE
SUBDIACONATE SUBSATURATED SULFADIAZINE SUPRAMUNDANE SYLLABICATED
TARRADIDDLES TETRACHORDAL TETRADACTYLS TETRADACTYLY TETRADRACHMA
TETRADRACHMS THEATERLANDS THEATRELANDS THREADBAREST THREADMAKERS
TRABECULATED TRADEMARKING TRADESCANTIA TRANSLOCATED TRANSMUNDANE
TRANSPLANTED TRAPEZOHEDRA TRIANGULATED TRIRADIATELY TRYPARSAMIDE
ULTRAMUNDANE UNACCLIMATED UNACQUAINTED UNADULTERATE UNAFFILIATED
UNAFFORDABLE UNALLEVIATED UNAPPARELLED UNAPPROACHED UNASCENDABLE
UNASSOCIATED UNATTENUATED UNBARRICADED UNBARRICADES UNCALCULATED
UNCALIBRATED UNCAPTIVATED UNCATALOGUED UNDEFEATABLE UNDEMARCATED
UNDERTAKABLE UNDRAMATISED UNDRAMATIZED UNELABORATED UNHABITUATED
UNIRRADIATED UNMAINTAINED UNPARALLELED UNPARDONABLE UNSCABBARDED
UNSHADOWABLE UNTRANSLATED UNVACCINATED UNVARIEGATED VAGABONDAGES
VAGABONDISED VAGABONDISES VAGABONDIZED VAGABONDIZES VALETUDINARY
VASCULARISED VASCULARIZED VAUDEVILLEAN VAUDEVILLIAN VOCABULARIED
WAKEBOARDERS WAKEBOARDING WALDGRAVINES WALLYDRAIGLE WEATHERBOARD
WITHDRAWABLE ZANTEDESCHIA