There are 516 twelve-letter words containing A, D and 2T, https://www.bestwordlist.com/c/a/4/12letterwordswithadtt.htm ABSINTHIATED ABSTRACTEDLY ACCULTURATED ACQUITTANCED ADAPTABILITY ADAPTATIONAL ADAPTIVITIES ADDITIVITIES ADJUSTMENTAL ADMINISTRANT ADMINISTRATE ADOPTABILITY ADOPTIANISTS ADOPTIONISTS ADSCITITIOUS ADULTERATING ADULTERATION ADULTERATORS ADULTESCENTS ADVENTITIOUS ADVENTURISTS AGGLUTINATED ALTITUDINOUS AMPHIDENTATE ANDOUILLETTE ANECDOTALIST ANESTHETISED ANESTHETIZED ANTECEDENTLY ANTIADITISES ANTICATHODES ANTIDIABETIC ANTIDILUTION ANTIDIURETIC ANTIDOGMATIC ANTIOXIDANTS ANTIPREDATOR ARTIODACTYLS ASTOUNDMENTS ATTENDANCIES ATTENDEMENTS ATTITUDINISE ATTITUDINIZE ATTORNEYDOMS AUDIOMETRIST AUDIOTYPISTS AUDITABILITY AUTOANTIBODY AUTODESTRUCT AUTODIDACTIC AUTOXIDATION BACKSTITCHED BASTARDLIEST BATTLEFIELDS BATTLEGROUND BATTLEMENTED BODDHISATTVA BODHISATTVAS BOOTSTRAPPED CARROTTOPPED CATADIOPTRIC CATHETERISED CATHETERIZED CERTIFICATED COADAPTATION COCCIDIOSTAT COCULTIVATED CONCATENATED CONCENTRATED CONDITIONATE CONSTELLATED CONSTERNATED CONSTUPRATED CONTAMINATED CONTEMPLATED CONTRACTEDLY CONTRADICTED CONTRADICTER CONTRADICTOR COUNTERACTED COUNTERTRADE DARMSTADTIUM DASTARDLIEST DEACTIVATING DEACTIVATION DEACTIVATORS DEARTICULATE DEATHWATCHES DEATTRIBUTED DEATTRIBUTES DEBILITATING DEBILITATION DEBILITATIVE DECANTATIONS DECAPITATING DECAPITATION DECAPITATORS DECENTRALIST DECONGESTANT DECORTICATED DECORTICATES DECORTICATOR DECREPITATED DECREPITATES DECRETALISTS DECRUSTATION DEFENESTRATE DEFLATIONIST DEGLUTINATED DEGLUTINATES DEGUSTATIONS DEHORTATIONS DELECTATIONS DELEGITIMATE DELIMITATING DELIMITATION DELIMITATIVE DEMETHYLATED DEMETHYLATES DEMOCRATISTS DEMONSTRATED DEMONSTRATES DEMONSTRATOR DEMOTIVATING DEMOTIVATION DENATURATION DENITRATIONS DENOTATIVELY DENTICULATED DENTIROSTRAL DEPARTEMENTS DEPARTMENTAL DEPORTATIONS DEPOSITATION DEPUTISATION DEPUTIZATION DERMATITIDES DERMATITISES DERMATOPHYTE DESATURATING DESATURATION DESTIGMATIZE DESTINATIONS DETERIORATED DETERIORATES DETERMINANTS DETERMINATED DETERMINATES DETERMINATOR DETESTATIONS DETONABILITY DETOXICATING DETOXICATION DETRACTINGLY DETRACTIVELY DETRAINMENTS DETRIMENTALS DETRUNCATING DETRUNCATION DEUTERATIONS DEUTOPLASTIC DEVASTATIONS DEVIATIONIST DEXTRALITIES DEXTROGYRATE DEXTROROTARY DICTATORSHIP DICTATRESSES DICTYOPTERAN DIETETICALLY DIGITISATION DIGITIZATION DILATABILITY DILATATIONAL DILATOMETERS DILATOMETRIC DILETTANTISH DILETTANTISM DIPLOMATISTS DIRECTORATES DISCEPTATION DISCEPTATORS DISINFECTANT DISINFESTANT DISINTEGRATE DISINTRICATE DISMASTMENTS DISMUTATIONS DISORIENTATE DISPUTATIONS DISPUTATIOUS DISSERTATING DISSERTATION DISSERTATIVE DISSERTATORS DISTEMPERATE DISTILLATION DISTILLATORY DISTORTIONAL DISTRACTABLE DISTRACTEDLY DISTRACTIBLE DISTRACTIONS DISTRAINMENT DISTRAUGHTLY DISTRIBUTARY DISTURBATIVE DITHEISTICAL DITHELETICAL DITHYRAMBIST DITRANSITIVE DITTOGRAPHIC DOCTRINALITY DOMESTICATED DOMESTICATES DOMESTICATOR DONATISTICAL DRAMATURGIST DUBITATIVELY DYSAESTHETIC EDITORIALIST EDUCATIONIST EDUTAINMENTS ENCULTURATED EUTHANATISED EUTHANATIZED EXCORTICATED EXPECTORATED EXPEDITATING EXPEDITATION EXPOSTULATED EXTERMINATED EXTRADITABLE EXTRADITIONS EXTRAPOLATED EXTRAVAGATED EXTRAVASATED FAINTHEARTED FIANCHETTOED FLUIDEXTRACT FLUTTERBOARD FOOTBREADTHS FRACTIONATED FRAGMENTATED FUNCTIONATED GESTICULATED GONIATITOIDS GREATHEARTED GUESSTIMATED GUTTURALISED GUTTURALIZED HALFWITTEDLY HEREDITAMENT HETERODACTYL HYDROPATHIST HYDROSTATICS HYPOSTATISED HYPOSTATIZED HYPOTHECATED ILLUSTRATEDS IMPENETRATED IMPOSTUMATED INADAPTATION INDENTATIONS INDETECTABLE INDOCTRINATE INEXACTITUDE INFATUATEDLY INGRATITUDES INGURGITATED INSTANTIATED INTERCALATED INTERDIALECT INTERDIGITAL INTERGRAFTED INTERMEDIATE INTERPLANTED INTERPOLATED INTERRELATED INTERROGATED INTERSTADIAL INTERSTRANDS INTERTANGLED INTERTIDALLY INTIMIDATING INTIMIDATION INTIMIDATORS INTIMIDATORY INTURBIDATED INTURBIDATES INVESTIGATED LANDAULETTES LATITUDINOUS LAUNDERETTES LEPTODACTYLS LIGHTHEARTED MAINSTREETED MALCONTENTED MALTODEXTRIN MATHEMATISED MATHEMATIZED MATRICULATED MEDITATIVELY METASTASISED METASTASIZED METATHESISED METATHESIZED MIDLATITUDES MIDLITTORALS MISENTREATED MISESTIMATED MITHRIDATISE MITHRIDATISM MITHRIDATIZE MULTIDENTATE MULTIFACETED MULTITRACKED MUTTONHEADED NECESSITATED NONACTIVATED NONATTENDERS NONAUTOMATED OBJECTIVATED OBTEMPERATED OCTAHEDRITES OCTAPEPTIDES ODONTOBLASTS ODONTOMATOUS ORCHESTRATED ORTHODONTIAS ORTHOPAEDIST OUTDATEDNESS OUTDISTANCED OUTDISTANCES OUTPOPULATED OUTTRAVELLED OVERTHWARTED PAEDIATRISTS PAEDOBAPTIST PARTICIPATED PEDANTOCRATS PENTADACTYLE PENTADACTYLS PENTADACTYLY PENTAHYDRATE PENTAPEPTIDE PENTLANDITES PERICLITATED PERLUSTRATED PHOTOCATHODE PHOTOSTATTED PLATITUDINAL PONTIFICATED POSTACCIDENT POSTDOCTORAL POSTGRADUATE PREADMITTING PRECIPITATED PREDESTINATE PREFORMATTED PREMEDITATED PREMEDITATES PREMEDITATOR PRIVATDOCENT PRIVATDOZENT PROTRACTEDLY PROTUBERATED PTERODACTYLE PTERODACTYLS QUIDDITATIVE RADIESTHETIC RATIOCINATED READAPTATION READJUSTMENT READMITTANCE REATTRIBUTED RECULTIVATED REDINTEGRATE REGURGITATED REINTEGRATED REITERATEDLY REMONSTRATED RENEGOTIATED REORIENTATED REPUNCTUATED RESTIMULATED RESUSCITATED RETARDATIONS RETRANSLATED SATELLITISED SATELLITIZED SCATTERGOODS SCINTILLATED SEQUESTRATED SHIRTWAISTED SIDEROSTATIC SPATTERDOCKS STADDLESTONE STADIOMETERS STADTHOLDERS STAIRSTEPPED STANDPATTERS STANDPATTISM STAPEDECTOMY STAYSTITCHED STEDFASTNESS STEPDAUGHTER STIPENDIATED STIPENDIATES STOMATITIDES STOMATODAEUM STONYHEARTED STOUTHEARTED STRAIGHTBRED STRAIGHTEDGE STRAIGHTENED STRANGULATED STRIDULANTLY STRIDULATING STRIDULATION STRIDULATORS STRIDULATORY STRINGHALTED SUBDEBUTANTE SUBSATURATED SUPERFETATED SWEETHEARTED SYNDIOTACTIC SYSTEMATISED SYSTEMATIZED TAUTOLOGISED TAUTOLOGIZED TAXIDERMISTS TEETERBOARDS TELEPATHISED TELEPATHIZED TENDENTIALLY TENDINOPATHY TENDONOPATHY TESTICULATED TETRACHORDAL TETRADACTYLS TETRADACTYLY TETRADRACHMA TETRADRACHMS TETRADYMITES TETRAHEDRITE TETRAHEDRONS THEATERLANDS THEATRELANDS THEATRICISED THEATRICIZED THERMOSTATED THIRDSTREAMS THITHERWARDS THREADBAREST TOLBUTAMIDES TRABECULATED TRACHEITIDES TRACTORFEEDS TRADESCANTIA TRADITIONARY TRADITIONERS TRADITIONIST TRADUCEMENTS TRADUCIANIST TRAITORHOODS TRANSCENDENT TRANSDUCTANT TRANSDUCTION TRANSDUCTORS TRANSITIONED TRANSLOCATED TRANSPLANTED TRANSUDATION TRANSUDATORY TREPIDATIONS TREPIDATIOUS TRIANGULATED TRICUSPIDATE TRIDACTYLOUS TRIPUDIATING TRIPUDIATION TRIRADIATELY TUBERCULATED TURRICULATED ULTRADISTANT UNADULTERATE UNATTENUATED UNATTRIBUTED UNCAPTIVATED UNCONTRACTED UNCULTIVATED UNDERSTATING UNDERSTRATUM UNDERTENANTS UNDERTREATED UNDETECTABLE UNDETECTABLY UNDISTRACTED UNEXTENUATED UNHABITUATED UNINTEGRATED UNPUNCTUATED UNSTIMULATED UNSTRATIFIED UNTERMINATED UNTHREATENED UNTRANSLATED UNTRANSMUTED UNVENTILATED VENDITATIONS WILDCATTINGS WITHDRAWMENT WITHSTANDERS WITHSTANDING