There are 600 thirteen-letter words containing A, C, D, I and T, https://www.bestwordlist.com/c/a/5/13letterwordswithacdit.htm
ACARIDOMATIUM ACARODOMATIUM ACCIDENTALISM ACCIDENTALITY ACCIDENTOLOGY
ACCOMMODATING ACCOMMODATION ACCOMMODATIVE ACCORDIONISTS ACCREDITATION
ACETAZOLAMIDE ACIDIFICATION ACIDIMETRICAL ADDICTIVENESS ADENOIDECTOMY
ADIABATICALLY ADIAPHORISTIC ADIATHERMANCY ADJUDICATIONS ADMINICULATED
ADMINICULATES ADVENTURISTIC AESTHETICISED AESTHETICIZED ANAPHYLACTOID
ANDROCENTRISM ANECDOTALISMS ANECDOTALISTS ANECDOTICALLY ANTIDESICCANT
ANTIDIABETICS ANTIDIURETICS ANTIPERIODICS ANTIPESTICIDE ANTISPASMODIC
APODICTICALLY APPENDICULATE ARACHNOIDITIS ARCHIMANDRITE ASTRODYNAMICS
ASYNDETICALLY AUDIOCASSETTE AUTHENTICATED AUTOSCHEDIASM AUTOSCHEDIAZE
BACKWARDATION BACKWOODSIEST BACTERIOCIDAL BACTERIOCIDES BASIDIOMYCETE
BENEDICTIONAL BICONDITIONAL BIDIRECTIONAL BIOPESTICIDAL BIRDWATCHINGS
BROADCASTINGS CANALICULATED CANDIDATESHIP CANDLELIGHTED CANDLELIGHTER
CARCINOMATOID CARDBOARDIEST CARDINALATIAL CARDINALITIAL CARDINALITIES
CARDIOLOGISTS CARDIOPATHIES CARDIOVERTERS CATHIODERMIES CENTUPLICATED
CHARACTERISED CHARACTERIZED CHATEAUBRIAND CHONDROSTIANS CIRCUMGYRATED
CIRCUMNUTATED CIRCUMROTATED CIRCUMSTANCED CLADISTICALLY CLAIRAUDIENTS
CLANDESTINELY CLANDESTINITY CLAUDICATIONS CLAVICHORDIST COADAPTATIONS
COADJUTORSHIP COADMINISTERS COCCIDIOSTATS CODECLINATION CODIFIABILITY
CODIFICATIONS COEDUCATIONAL COLOQUINTIDAS COMMENDATIONS COMPLICATEDLY
CONDEMNATIONS CONDENSATIONS CONDITIONABLE CONDITIONALLY CONDITIONATED
CONDITIONATES CONFEDERATING CONFEDERATION CONFEDERATIVE CONGLUTINATED
CONQUISTADORS CONSERVATISED CONSERVATIZED CONSIDERATELY CONSIDERATION
CONSIDERATIVE CONSOLIDATING CONSOLIDATION CONSOLIDATIVE CONSOLIDATORS
CONSTRAINEDLY CONTAINERISED CONTAINERIZED CONTRABANDISM CONTRABANDIST
CONTRADICTERS CONTRADICTING CONTRADICTION CONTRADICTIVE CONTRADICTORS
CONTRADICTORY CONTRITURATED COORDINATIONS CORESIDENTIAL COTRANSDUCING
COUNTERRAIDED COUNTERVAILED CREDENTIALING CREDENTIALISM CREDENTIALLED
CREDITABILITY CRYSTALLOIDAL CUSTODIANSHIP CYCLOADDITION CYCLOPAEDISTS
CYTODIAGNOSES CYTODIAGNOSIS DACTYLIOMANCY DACTYLOLOGIES DAMNIFICATION
DANDIFICATION DATAVEILLANCE DEACTIVATIONS DEARTICULATED DEARTICULATES
DECAFFEINATED DECAFFEINATES DECAMETHONIUM DECAPITALISED DECAPITALISES
DECAPITALIZED DECAPITALIZES DECAPITATIONS DECAPSULATING DECAPSULATION
DECARBONATING DECARBONATION DECARBURATION DECARTELISING DECARTELIZING
DECEIVABILITY DECELERATIONS DECENTRALISED DECENTRALISES DECENTRALISTS
DECENTRALIZED DECENTRALIZES DECEREBRATING DECEREBRATION DECHLORINATED
DECHLORINATES DECLAMATORILY DECLARATIVELY DECLARATORILY DECLINATIONAL
DECLINATORIES DECOLORATIONS DECONTAMINANT DECONTAMINATE DECORTICATING
DECORTICATION DECORTICATORS DECREPITATING DECREPITATION DECRUSTATIONS
DECUMULATIONS DEDUPLICATING DEDUPLICATION DEFORCIATIONS DEGLACIATIONS
DELECTABILITY DELICATESSENS DELIRIFACIENT DEMOCRATISERS DEMOCRATISING
DEMOCRATIZERS DEMOCRATIZING DENDRITICALLY DENSIFICATION DENTICULATELY
DENTICULATION DENUNCIATIONS DEONTOLOGICAL DEPRECATINGLY DEPRECATIVELY
DEPRECATORILY DEPRECIATIONS DERACINATIONS DERMATOPHYTIC DESANCTIFYING
DESPICABILITY DESTRUCTIONAL DETACHABILITY DETECTABILITY DETERMINACIES
DETOXICATIONS DETRUNCATIONS DEXTROCARDIAC DEXTROCARDIAS DIACATHOLICON
DIACHRONISTIC DIACRITICALLY DIAGNOSTICIAN DIALECTICALLY DIALECTICIANS
DIALECTICISMS DIALOGISTICAL DIAMETRICALLY DIAPHRAGMATIC DIATHERMACIES
DIATOMICITIES DIBRANCHIATES DICHLORACETIC DICHROMATISMS DICTATORIALLY
DICTATORSHIPS DICTYOPTERANS DIFFRACTIVELY DIFUNCTIONALS DIGNIFICATION
DIJUDICATIONS DILACERATIONS DILUCIDATIONS DIORISTICALLY DIOTHELETICAL
DIRECTORIALLY DISACCREDITED DISACCUSTOMED DISAFFECTEDLY DISAFFECTIONS
DISARTICULATE DISASSOCIATED DISASSOCIATES DISCAPACITATE DISCEPTATIONS
DISCEPTATIOUS DISCIPLINANTS DISCLAMATIONS DISCOLORATION DISCORPORATED
DISCORPORATES DISCREDITABLE DISCREDITABLY DISCRETIONARY DISCRIMINANTS
DISCRIMINATED DISCRIMINATES DISCRIMINATOR DISENCHANTERS DISENCHANTING
DISENTRANCING DISFUNCTIONAL DISINFECTANTS DISINTOXICATE DISINTRICATED
DISINTRICATES DISPLACEMENTS DISSOCIATIONS DISTRACTINGLY DISTRACTIVELY
DIVARICATIONS DIVELLICATING DIVERTICULATE DOCTRINAIRISM DOCTRINARIANS
DOCTRINARISMS DOCUMENTALIST DOCUMENTARIAN DOCUMENTARIES DOCUMENTARILY
DOCUMENTARISE DOCUMENTARIST DOCUMENTARIZE DOCUMENTATION DODECAPHONIST
DOMESTICATING DOMESTICATION DOMESTICATIVE DOMESTICATORS DOMICILIATING
DOMICILIATION DOOMWATCHINGS DOSIMETRICIAN DRAMATURGICAL DUALISTICALLY
DULCIFICATION DUPLICABILITY DYOTHELETICAL DYOTHELITICAL DYSFUNCTIONAL
DYSPEPTICALLY EDUCABILITIES EDUCATABILITY EDUCATIONALLY EDUCATIONESES
EDUCATIONISTS EDULCORATIONS ENANTIODROMIC ENDOLYMPHATIC ENDOPARASITIC
EQUIDISTANCES EUDAEMONISTIC EUDAIMONISTIC EUDIOMETRICAL EXCLUDABILITY
EXTRAJUDICIAL FACTIONALISED FACTIONALIZED FANTASTICATED FICTIONALISED
FICTIONALIZED FLUIDEXTRACTS GALACTOSIDASE GEODYNAMICIST GILLRAVITCHED
GONADECTOMIES GONADOTROPHIC GRAMMATICISED GRAMMATICIZED GRANODIORITIC
HANDICRAFTERS HEMICHORDATES HEPTADECANOIC HEXACTINELLID HOMOSCEDASTIC
HYDROMAGNETIC HYDROMETRICAL HYDROPATHICAL HYDROSTATICAL HYDROTHERAPIC
HYDROTHORACIC HYDROXYACETIC HYPOACIDITIES ICHTHYOPSIDAN IDENTICALNESS
IDEOGRAMMATIC IDIOMATICALLY IDIOMATICNESS IDIOPLASMATIC IDIOSYNCRATIC
IDIOTICALNESS IMPREDICATIVE INADVERTENCES INCANDESCENTS INCAPACITATED
INCARDINATING INCARDINATION INCONSIDERATE INDETERMINACY INDOCTRINATED
INDOCTRINATES INDOCTRINATOR INDOMETHACINS INDUPLICATION INEDUCABILITY
INEXACTITUDES INTERCOMPARED INTERPANDEMIC INTOXICATEDLY JUDGMATICALLY
LEUCOPLASTIDS MACHAIRODONTS MACRODACTYLIC MALFUNCTIONED MASTOIDECTOMY
MATCHBOARDING MEDICAMENTARY MEDICAMENTING MEDICAMENTOUS MEDIEVALISTIC
MELODRAMATICS MISADVERTENCE MISCALCULATED MISCATALOGUED MISEDUCATIONS
MISPUNCTUATED MITOCHONDRIAL MODIFICATIONS MULTIBRANCHED MULTIPLICANDS
MUNDIFICATION MUNDIFICATIVE MYOCARDITISES NICOTINAMIDES NIDIFICATIONS
NONACCIDENTAL NONACCREDITED NONASSOCIATED NONCANDIDATES NONCULTIVATED
NONDEMOCRATIC NONDIPLOMATIC NONEDUCATIONS NONINDICTABLE NONINTERLACED
NUCLEOTIDASES OCCIDENTALISE OCCIDENTALISM OCCIDENTALIST OCCIDENTALIZE
ODONTOBLASTIC ODONTOLOGICAL ORTHOPAEDICAL OUTDISTANCING OUTRECUIDANCE
OVERDRAMATICS OVEREDUCATING OVEREDUCATION OVERMEDICATED OVERMEDICATES
PAEDIATRICIAN PANDICULATION PARASITICIDAL PARASITICIDES PARCHMENTISED
PARCHMENTIZED PARTICLEBOARD PARTICOLOURED PEDANTICISING PEDANTICIZING
PEDANTOCRATIC PEDIATRICIANS PEDICULATIONS PEDUNCULATION PENTACRINOIDS
PENTADACTYLIC PEPTIDOGLYCAN PERIODICALIST PERISSODACTYL PHOTODYNAMICS
PICTORIALISED PICTORIALIZED POLITICALISED POLITICALIZED POLYDACTYLIES
POLYDACTYLISM PREACQUAINTED PREDICABILITY PREDICAMENTAL PREDICATIVELY
PREFABRICATED PREJUDICATING PREJUDICATION PREJUDICATIVE PREMEDICATING
PREMEDICATION PRESANCTIFIED PRIVATDOCENTS PROPAEDEUTICS QUADRATICALLY
QUADRICIPITAL QUADRISECTING QUADRISECTION QUADRUPLICATE QUADRUPLICITY
QUARTODECIMAN QUINDECAPLETS QUODLIBETICAL RADICULOPATHY RADIOACTIVATE
RADIOACTIVELY RADIOACTIVITY RADIOCHEMISTS RADIOISOTOPIC RADIOLOCATION
RADIOPACITIES REACCREDITING READMITTANCES REARTICULATED RECALCITRATED
RECAPITALISED RECAPITALIZED RECAPITULATED RECATEGORIZED RECENTRALIZED
RECONSOLIDATE REDECORATIONS REDEDICATIONS REDUPLICATING REDUPLICATION
REDUPLICATIVE REVENDICATING REVENDICATION REVINDICATING REVINDICATION
SACERDOTALISE SACERDOTALISM SACERDOTALIST SACERDOTALIZE SADOMASOCHIST
SCRATCHBUILDS SCROBICULATED SECTARIANISED SECTARIANIZED SECTIONALISED
SECTIONALIZED SEMIDETACHEDS SEXTUPLICATED SHADOWCASTING SODOMITICALLY
SOPHISTICATED SOUNDTRACKING SPERMATOCIDAL SPERMATOCIDES STICKHANDLERS
STICKHANDLING STRAIGHTLACED STRAITLACEDLY SUBDIACONATES SUBINDICATING
SUBINDICATION SUBINDICATIVE SULFACETAMIDE SYCOPHANTISED SYCOPHANTIZED
SYNDACTYLISMS SYNDICALISTIC TECHNICALISED TECHNICALIZED TETRACHLORIDE
THERMODYNAMIC THIOCARBAMIDE TRADESCANTIAS TRADUCIANISMS TRADUCIANISTS
TRAGICOMEDIES TRANSACTINIDE TRANSDUCTIONS TRANSLUCIDITY TRICHOMONADAL
TRICORPORATED TRISACCHARIDE TRISOCTAHEDRA TROGLODYTICAL TURACOVERDINS
ULTRADISTANCE ULTRARADICALS UNADJUDICATED UNANTICIPATED UNAPPRECIATED
UNARTICULATED UNASCERTAINED UNCAPITALISED UNCAPITALIZED UNCHLORINATED
UNCHRISTIANED UNCOMPLICATED UNCONDITIONAL UNCONSTRAINED UNCOORDINATED
UNDEPRECIATED UNDERACTIVITY UNDERCOATINGS UNDERREACTING UNDERREACTION
UNDIALECTICAL UNDISSOCIATED UNDISTRACTING UNDOCTRINAIRE UNDOMESTICATE
UNPLASTICISED UNPLASTICIZED UNPREDICTABLE UNPREDICTABLY VACATIONLANDS
VALEDICTORIAN VALEDICTORIES VERTICILLATED VIDEOCASSETTE VINDICABILITY
VINDICATORILY WATCHDOGGINGS XANTHOCHROIDS ZANTEDESCHIAS ZYGODACTYLISM