There are 530 twelve-letter words containing 2A, D and L, https://www.bestwordlist.com/c/a/4/12letterwordswithaadl.htm
ABSTRACTEDLY ACADEMICALLY ACCELERANDOS ACCIDENTALLY ACCLIMATISED
ACCLIMATIZED ACCOMMODABLE ACCREDITABLE ACCULTURATED ACETALDEHYDE
ACETANILIDES ACHLAMYDEOUS ACHLORHYDRIA ACIDULATIONS ADAPTABILITY
ADAPTATIONAL ADDITIONALLY ADJECTIVALLY ADJUSTMENTAL ADMINICULATE
ADMIRABILITY ADMIRALSHIPS ADOPTABILITY ADORABLENESS ADULARESCENT
ADULTERATING ADULTERATION ADULTERATORS ADVERBIALISE ADVERBIALIZE
ADVERTORIALS ADVISABILITY AGGLOMERATED AGGLUTINATED ALDERMANLIER
ALDERMANLIKE ALDERMANRIES ALDERMANSHIP ALDOLISATION ALDOLIZATION
ALEXANDERSES ALEXANDRINES ALEXANDRITES ALLOANTIBODY ALPHABETISED
ALPHABETIZED ALPROSTADILS AMIANTHOIDAL AMONTILLADOS AMYGDALOIDAL
ANECDOTALISM ANECDOTALIST ANISODACTYLS ANTEDILUVIAL ANTEDILUVIAN
ANTEPRANDIAL ANTHROPOIDAL APODEICTICAL APPENDICULAR APPLAUDINGLY
ARTERIALISED ARTERIALIZED ARTIODACTYLS AUDIOLOGICAL AUDIOVISUALS
AUDITABILITY AUTODIALLING BACKHANDEDLY BACKPADDLING BACKPEDALING
BACKPEDALLED BACTERICIDAL BALDERDASHES BALLADEERING BALLADMONGER
BALLHANDLING BARDOLATRIES BARDOLATROUS BASTARDLIEST BEADBLASTERS
BEADBLASTING BIODYNAMICAL BLACKGUARDED BLACKGUARDLY BLACKHANDERS
BLACKLEADING BLADDERWRACK BOARDSAILING BOARDSAILORS BRACHYDACTYL
BREATHALYSED BREATHALYZED CADAVEROUSLY CAESALPINOID CALCULATEDLY
CALENDARISED CALENDARISES CALENDARISTS CALENDARIZED CALENDARIZES
CALLIGRAPHED CAMELEOPARDS CANDELABRUMS CANNABIDIOLS CANNIBALISED
CANNIBALIZED CANNONBALLED CARBONYLATED CARBOXYLATED CARDINALATES
CARDINALSHIP CARDIOMEGALY CARDIOPLEGIA CARUNCULATED CATALOGUISED
CATALOGUIZED CATHODICALLY CEPHALOPODAN CLAIRAUDIENT CLAPBOARDING
CLAPPERBOARD CLAUDICATION COLLABORATED CONFABULATED CONFLAGRATED
CRANKHANDLES CYCLANDELATE CYCLOPAEDIAS DACTYLICALLY DACTYLOGRAMS
DAMNABLENESS DASTARDLIEST DAYDREAMLIKE DEALBREAKERS DEAMBULATORY
DEARTICULATE DECALCOMANIA DECAPITALISE DECAPITALIZE DECAPSULATED
DECAPSULATES DECASUALISED DECASUALISES DECASUALIZED DECASUALIZES
DECASYLLABIC DECASYLLABLE DECLAMATIONS DECLARATIONS DEDICATIONAL
DEDICATORIAL DEFALCATIONS DEFAMATORILY DEFLAGRATING DEFLAGRATION
DEFLAGRATORS DEFLATIONARY DEGLACIATION DELAMINATING DELAMINATION
DEMOCRATICAL DEMONIACALLY DENATURALISE DENATURALIZE DEPARTMENTAL
DERACIALISED DERACIALISES DERACIALIZED DERACIALIZES DERIVATIONAL
DERMAPLANING DESACRALISED DESACRALISES DESACRALIZED DESACRALIZES
DESALINATING DESALINATION DESALINATORS DEVALUATIONS DIABOLICALLY
DIAGNOSEABLE DIAGNOSTICAL DIAGONALISED DIAGONALISES DIAGONALIZED
DIAGONALIZES DIAGRAMMABLE DIALECTICIAN DIALOGICALLY DIALYSATIONS
DIALYTICALLY DIALYZATIONS DIAPHANOUSLY DIAPOPHYSIAL DIARTHRODIAL
DIATONICALLY DICARPELLARY DIDACTICALLY DIGLADIATING DIGLADIATION
DIGLADIATORS DILACERATING DILACERATION DILAPIDATING DILAPIDATION
DILAPIDATORS DILATABILITY DILATATIONAL DIPLOCARDIAC DIPLOMATICAL
DISAFFILIATE DISAGREEABLE DISAGREEABLY DISALLOWABLE DISALLOWANCE
DISANALOGIES DISANALOGOUS DISAPPROVALS DISCALCEATES DISCLAMATION
DISPLACEABLE DISPLEASANCE DISPLEASANTS DISTRACTABLE DISTRAINABLE
DIVARICATELY DIVINATORIAL DODECAHEDRAL DOGMATICALLY DOLLAROCRACY
DONATISTICAL DORSOLATERAL DOWNLOADABLE DRACONICALLY DRAMATICALLY
DRAMATISABLE DRAMATIZABLE DRAPEABILITY DUNIEWASSALS DUNNIEWASSAL
DYNASTICALLY DYSCALCULIAS ENARTHRODIAL ENCAPSULATED ENCARNALISED
ENCARNALIZED ENDOTRACHEAL ENGARLANDING EQUIBALANCED EXTRADITABLE
EXTRAPOLATED FAMILIARISED FAMILIARIZED FANTASYLANDS FARTHINGLAND
FASCICULATED FASCINATEDLY FLANNELBOARD FLASHFORWARD FOUNDATIONAL
FUNAMBULATED FUNDAMENTALS GALACTOSIDES GALLBLADDERS GALLIARDISES
GALRAVITCHED GANGLIONATED GANGSTERLAND GEODYNAMICAL GLADIATORIAL
GLADIATORIAN GLADWRAPPING GLASSPAPERED GLASSYHEADED GRADABLENESS
GRADUALISTIC GRADUALITIES GRANDIFLORAS HALFENDEALES HALLUCINATED
HARDHEADEDLY HARDSCRABBLE HARLEQUINADE HEADMASTERLY HEBDOMADALLY
HENDECAGONAL HERALDICALLY HEXADACTYLIC HEXADECIMALS HOLIDAYMAKER
HOLLANDAISES HUSBANDLANDS HYDRALAZINES IDEALISATION IDEALIZATION
IDEATIONALLY INADEQUATELY INCAPSULATED INDICATIONAL INELABORATED
INERADICABLE INERADICABLY INFANTICIDAL INFATUATEDLY INTERCALATED
INTERSTADIAL INTRACARDIAL INVALIDATING INVALIDATION INVALIDATORS
JUDICATORIAL LABIODENTALS LABRADOODLES LABRADORITES LAGGARDLIEST
LAMPADEDROMY LAMPADOMANCY LANDAULETTES LANDBOARDING LANDGRAVATES
LANDGRAVIATE LANDGRAVINES LANDSCAPINGS LANDSCAPISTS LARGEHEARTED
LAUDABLENESS LAUNDRYWOMAN LEADERBOARDS LEATHERHEADS LIQUIDAMBARS
LOADSAMONEYS LOADSAMONIES LOGODAEDALIC LOGODAEDALUS LONGICAUDATE
MACHICOLATED MACRODACTYLS MACRODACTYLY MADRIGALISTS MAENADICALLY
MALADDRESSES MALADJUSTIVE MANDIBULATED MANDIBULATES MAQUILADORAS
MARGINALISED MARGINALIZED MARISCHALLED MARSHLANDERS MARTELLANDOS
MATERIALISED MATERIALIZED MATRICULATED MEDIAEVALISM MEDIAEVALIST
MEDICAMENTAL MEGALOCARDIA MELODRAMATIC MILLIRADIANS MISALLOCATED
MISCATALOGED MISEVALUATED MULTIGRAVIDA MULTIWARHEAD MURDERABILIA
NAPHTHALISED NAPHTHALIZED NATIONALISED NATIONALIZED NEANDERTALER
NEANDERTHALS NONRAILROADS NORADRENALIN OCTAHEDRALLY OVERANALYSED
OVERANALYZED OVERBALANCED PADDLEBOARDS PAEDOLOGICAL PAEDOPHILIAC
PAEDOPHILIAS PALUDAMENTUM PAPPARDELLES PARABOLOIDAL PARADIDDLING
PARADISAICAL PARADISIACAL PARADOXOLOGY PARAGLIDINGS PARALDEHYDES
PARALLELISED PARALLELIZED PARAMEDICALS PARFOCALISED PARFOCALIZED
PARLOURMAIDS PASTURELANDS PEDANTICALLY PEDICELLARIA PENTADACTYLE
PENTADACTYLS PENTADACTYLY PERAMBULATED PLANTIGRADES PLASMODESMAS
PLASTERBOARD PLATITUDINAL POSTPRANDIAL PREAMBULATED PRISMATOIDAL
PROCATHEDRAL PSEUDOSCALAR QUADRANGULAR QUADRAPLEGIA QUADRAPLEGIC
QUADRENNIALS QUADRIENNIAL QUADRINOMIAL QUADRIPLEGIA QUADRIVALENT
RADICALISING RADICALISTIC RADICALITIES RADICALIZING RADIOLABELED
RADIOLARIANS RADIOLOGICAL RAILROADINGS RALLENTANDOS RATIONALISED
RATIONALIZED REACCLIMATED READABLENESS READJUSTABLE REAPPARELLED
RECALCULATED RECALIBRATED RECATALOGUED REHYDRATABLE RELANDSCAPED
RELANDSCAPES RETRANSLATED REVALIDATING REVALIDATION RIJKSDAALERS
SACCADICALLY SACCHAROIDAL SACERDOTALLY SADDLEBACKED SADISTICALLY
SAILBOARDERS SAILBOARDING SALAMANDRIAN SALAMANDRINE SALAMANDROID
SALICYLAMIDE SALMAGUNDIES SANDBLASTERS SANDBLASTING SARDONICALLY
SCABBARDLESS SCAFFOLDAGES SCALENOHEDRA SCANDALISERS SCANDALISING
SCANDALIZERS SCANDALIZING SCANDALOUSLY SEMIPALMATED SHAMEFACEDLY
SPLASHBOARDS SPORADICALLY SPREADEAGLED STANDARDLESS STRADDLEBACK
STRANGULATED SUBABDOMINAL SUBALLOCATED SUBCARDINALS SULFADIAZINE
SYLLABICATED TARRADIDDLES TETRACHORDAL TETRADACTYLS TETRADACTYLY
THEATERLANDS THEATRELANDS TRABECULATED TRANSLOCATED TRANSPLANTED
TRIANGULATED TRIRADIATELY TRYPANOCIDAL TYRANNICIDAL ULTRADISTANT
ULTRAMUNDANE ULTRARADICAL UNACCLIMATED UNADULTERATE UNAFFILIATED
UNAFFORDABLE UNAFFORDABLY UNALLEVIATED UNAPPARELLED UNASCENDABLE
UNCALCULATED UNCALIBRATED UNCATALOGUED UNDEFEATABLE UNDERTAKABLE
UNELABORATED UNPARALLELED UNPARDONABLE UNPARDONABLY UNSHADOWABLE
UNTRANSLATED VACATIONLAND VALETUDINARY VASCULARISED VASCULARIZED
VASODILATION VASODILATORS VASODILATORY VAUDEVILLEAN VAUDEVILLIAN
VOCABULARIED WALDGRAVINES WALLYDRAIGLE WITHDRAWABLE ZALAMBDODONT