There are 764 thirteen-letter words containing A, D, 2I and S, https://www.bestwordlist.com/c/a/5/13letterwordswithadiis.htm ACADEMICALISM ACCIDENTALISM ACCORDIONISTS ACIDOPHILUSES ADAPTATIONIST ADDICTIVENESS ADIAPHORISTIC ADJUDICATIONS ADJUSTABILITY ADMINICULATES ADMINISTERING ADMINISTRABLE ADMINISTRANTS ADMINISTRATED ADMINISTRATES ADMINISTRATOR ADMISSIBILITY ADMONISHINGLY ADORABILITIES ADSORBABILITY ADVENTURISTIC ADVERBIALISED ADVERBIALISES ADVERBIALIZES AECIDIOSPORES AERODIGESTIVE AEROMEDICINES AEROSIDERITES AESTHETICISED AESTHETICIZED ALDERMANITIES ALDOLISATIONS ALDOLIZATIONS AMPHIDIPLOIDS AMPHIPLOIDIES ANAPHRODISIAC ANAPHRODISIAS ANDRODIOECISM ANIMADVERSION ANTEDILUVIANS ANTIDESICCANT ANTIDIABETICS ANTIDIURETICS ANTIMODERNISM ANTIMODERNIST ANTIPERIODICS ANTIPESTICIDE ANTISPASMODIC APHRODISIACAL ARACHNOIDITIS ATTITUDINISED ATTITUDINISER ATTITUDINISES ATTITUDINIZES AUDIOMETRISTS AUDIOVISUALLY AUTOXIDATIONS AVOIRDUPOISES BACTERIOCIDES BASIDIOMYCETE BASIDIOSPORES BIDDABILITIES BIOFLAVONOIDS BIOPESTICIDAL BIRDWATCHINGS BLACKBIRDINGS BOARDSAILINGS BOATBUILDINGS BRADYKINESIAS BREADWINNINGS CALENDARISING CANDIDATESHIP CARDINALITIES CARDINALSHIPS CARDIOLOGISTS CARDIOPATHIES CARDIOPLEGIAS CARDIOVERSION CATHIODERMIES CHICKABIDDIES CHILDBEARINGS CHILIAHEDRONS CLADISTICALLY CLAIRAUDIENTS CLANDESTINITY CLAUDICATIONS CLAVICHORDIST COADMINISTERS COCCIDIOSTATS CODIFICATIONS COLOQUINTIDAS CONDITIONATES CONSIDERATION CONSIDERATIVE CONSOLIDATING CONSOLIDATION CONSOLIDATIVE CONTAINERISED COORDINATIONS CORDWAINERIES CORESIDENTIAL CREDENTIALISM CUSTODIANSHIP CYCLODIALYSIS CYTODIAGNOSIS DAMNABILITIES DAREDEVILRIES DAUNORUBICINS DEACTIVATIONS DEAMINISATION DEASPIRATIONS DEBILITATIONS DECAPITALISED DECAPITALISES DECAPITALIZES DECAPITATIONS DECARBONISING DECARBURISING DECARTELISING DECASUALISING DECASUALIZING DECLASSIFYING DECLINATORIES DECRASSIFYING DECRIMINALISE DEDRAMATISING DEFEASIBILITY DEFEUDALISING DEFIBRILLATES DEFLATIONISTS DEFORCIATIONS DEFORMALISING DEGLACIATIONS DEGLAMORISING DEINDEXATIONS DEIONISATIONS DEIONIZATIONS DELAMINATIONS DELEGITIMATES DELIBERATIONS DELIMITATIONS DEMAGNETISING DEMATERIALISE DEMILITARISED DEMILITARISES DEMILITARIZES DEMIMONDAINES DEMINERALISED DEMINERALISER DEMINERALISES DEMINERALIZES DEMOCRATISING DEMONISATIONS DEMONIZATIONS DEMOTIVATIONS DEMUTUALISING DENATIONALISE DENIABILITIES DENOMINATIONS DENOMINATIVES DENSIFICATION DENTILINGUALS DENUNCIATIONS DEODORISATION DEOPPILATIONS DEOPPILATIVES DEOXIDISATION DEPAUPERISING DEPOSITATIONS DEPRECIATIONS DEPUTISATIONS DEPUTIZATIONS DERACIALISING DERACINATIONS DEREALISATION DERIVATIONIST DESACRALISING DESACRALIZING DESALINATIONS DESANCTIFYING DESERTISATION DESERTIZATION DESEXUALISING DESEXUALIZING DESIDERATIONS DESIDERATIVES DESPICABILITY DESPOLIATIONS DESTABILISERS DESTABILISING DESTABILIZERS DESTABILIZING DESTIGMATIZED DESTIGMATIZES DETERMINACIES DETESTABILITY DETOXICATIONS DETRIBALISING DEVIATIONISMS DEVIATIONISTS DEVOTIONALIST DIABETOLOGIST DIABOLOLOGIES DIACHRONISTIC DIAGEOTROPISM DIAGNOSTICIAN DIAGONALISING DIALECTICIANS DIALECTICISMS DIALOGISTICAL DIALYSABILITY DIAMAGNETISMS DIAPHANEITIES DIAPHRAGMITIS DIASTROPHISMS DIATHERMACIES DIATOMICITIES DIAZOTISATION DIBRANCHIATES DICHROMATISMS DICTATORSHIPS DIESELISATION DIESELIZATION DIETHYLAMIDES DIETHYLAMINES DIFFERENTIALS DIFUNCTIONALS DIGITISATIONS DIGITIZATIONS DIGLADIATIONS DIGRESSIONARY DIJUDICATIONS DILACERATIONS DILAPIDATIONS DILATOMETRIES DILETTANTEISH DILETTANTEISM DILETTANTISMS DILUCIDATIONS DIMENSIONALLY DIMERISATIONS DIMERIZATIONS DIORISTICALLY DIPLOMATISING DIPSOMANIACAL DISACCHARIDES DISACCREDITED DISAFFECTIONS DISAFFILIATED DISAFFILIATES DISAFFIRMANCE DISAMBIGUATED DISAMBIGUATES DISANNULLINGS DISAPPOINTING DISARTICULATE DISASSEMBLIES DISASSEMBLING DISASSIMILATE DISASSOCIATED DISASSOCIATES DISAUTHORISED DISAUTHORISES DISAUTHORIZED DISAUTHORIZES DISCANDERINGS DISCAPACITATE DISCEPTATIONS DISCEPTATIOUS DISCIPLINABLE DISCIPLINANTS DISCLAMATIONS DISCOGRAPHIES DISCOLORATION DISCORDANCIES DISCREDITABLE DISCREDITABLY DISCREPANCIES DISCRETIONARY DISCRIMINABLE DISCRIMINABLY DISCRIMINANTS DISCRIMINATED DISCRIMINATES DISCRIMINATOR DISENCHAINING DISENCHANTING DISENTAILMENT DISENTANGLING DISENTRAILING DISENTRAINING DISENTRANCING DISENTRAYLING DISEQUILIBRIA DISESTIMATION DISFIGURATION DISFRANCHISED DISFRANCHISES DISFUNCTIONAL DISGARNISHING DISGARRISONED DISGAVELLINGS DISGRADATIONS DISGREGATIONS DISHABILITATE DISHARMONIOUS DISHARMONISED DISHARMONISES DISHARMONIZED DISHARMONIZES DISHEARTENING DISILLUMINATE DISINFECTANTS DISINFESTANTS DISINFLATIONS DISINTEGRABLE DISINTEGRATED DISINTEGRATES DISINTEGRATOR DISINTHRALLED DISINTOXICATE DISINTRICATED DISINTRICATES DISINVIGORATE DISNATURALISE DISNATURALIZE DISOBLIGATION DISOBLIGATORY DISOPERATIONS DISORDINATELY DISORGANISERS DISORGANISING DISORGANIZERS DISORGANIZING DISORIENTATED DISORIENTATES DISPARAGINGLY DISPASSIONATE DISPAUPERISED DISPAUPERISES DISPAUPERIZED DISPAUPERIZES DISPENSATIONS DISPLANTATION DISPLEASINGLY DISPLEASURING DISPOSABILITY DISPOSITIONAL DISPRAISINGLY DISPROPRIATED DISPROPRIATES DISPUTABILITY DISPUTATIVELY DISQUALIFIERS DISQUALIFYING DISQUANTITIED DISQUANTITIES DISREPUTATION DISSATISFYING DISSEMINATING DISSEMINATION DISSEMINATIVE DISSEMINATORS DISSEPIMENTAL DISSERTATIONS DISSEVERATION DISSIMILARITY DISSIMILATING DISSIMILATION DISSIMILATIVE DISSIMILATORY DISSIMULATING DISSIMULATION DISSIMULATIVE DISSIMULATORS DISSOCIALISED DISSOCIALISES DISSOCIALIZED DISSOCIALIZES DISSOCIATIONS DISSYLLABISMS DISTILLATIONS DISTRACTINGLY DISTRACTIVELY DISTRAINMENTS DISTRIBUTABLE DISYLLABIFIED DISYLLABIFIES DITHYRAMBISTS DITRANSITIVES DITTOGRAPHIES DIVARICATIONS DIVERSIFIABLE DIVINISATIONS DIVINIZATIONS DOCTRINAIRISM DOCTRINARIANS DOCTRINARISMS DOGMATISATION DOLLARISATION DOLPHINARIUMS DOMESTICATING DOMESTICATION DOMESTICATIVE DOSIMETRICIAN DRACONIANISMS DRAMATISATION DRAPABILITIES DRIVABILITIES DUALISTICALLY DURALUMINIUMS DUTIABILITIES EDITORIALISED EDITORIALISER EDITORIALISES EDITORIALISTS EDITORIALIZES EDUCABILITIES EDUCATIONISTS EMOTIONALISED ENDOPARASITIC EPANADIPLOSIS EPIDOTISATION EQUIDISTANCES EQUIDISTANTLY ESOPHAGITIDES ESSENTIALISED ESSENTIALIZED EUDAEMONISTIC EUDAIMONISTIC EXPEDITATIONS FACTIONALISED FARADISATIONS FARADIZATIONS FAULTFINDINGS FERRICYANIDES FEUDALISATION FICTIONALISED FIDEICOMMISSA FLUIDISATIONS FLUIDIZATIONS FLUORIDATIONS GEODYNAMICIST GLADIATORSHIP GORMANDISINGS GORMANDIZINGS GOURMANDISING GRADABILITIES GRAMMATICISED GRANDIOSITIES GRANODIORITES GUANETHIDINES GUARDIANSHIPS HAEMODIALYSIS HAEMOSIDERINS HAIRDRESSINGS HEREDITARIANS HISPANIOLISED HISPANIOLIZED HYBRIDISATION HYDRASTININES HYPOACIDITIES ICHTHYOPSIDAN IDEALISATIONS IDEALIZATIONS IDENTICALNESS IDIOMATICNESS IDIOPLASMATIC IDIOSYNCRATIC IDIOTICALNESS ILLIBERALISED IMMEDIATENESS IMMODERATIONS IMPASSIONEDLY INADAPTATIONS INAUDIBLENESS INCENDIARISMS INCONSIDERATE INDESCRIBABLE INDESCRIBABLY INDISPENSABLE INDISPENSABLY INDISSOCIABLE INDISSOCIABLY INDISSOLVABLE INDISSUADABLE INDISSUADABLY INDIVIDUALISE INDIVIDUALISM INDIVIDUALIST INDIVIDUATORS INDOCTRINATES INDOMETHACINS INDUSTRIALISE INDUSTRIALISM INDUSTRIALIST INDUSTRIALIZE INEXACTITUDES INGRAINEDNESS INORDINATIONS INSUBORDINATE INTERMEDIATES INTERRADIUSES INTERSIDEREAL INTERSTADIALS INTIMIDATIONS INVALIDATIONS INVALIDNESSES ISOANTIBODIES ISOCARBOXAZID KALEIDOSCOPIC KITEBOARDINGS LACKADAISICAL LAUDABILITIES LEGITIMATISED LYMPHADENITIS MADERISATIONS MADERIZATIONS MAGNITUDINOUS MAIDISHNESSES MALADMINISTER MASTERMINDING MASTOIDITIDES MASTOIDITISES MEDIAEVALISMS MEDIAEVALISTS MEDIATISATION MEDIATORSHIPS MEDIEVALISTIC MERCHANDISING MERCURIALISED METHODISATION MINERALOGISED MISADDRESSING MISATTRIBUTED MISCLASSIFIED MISDIAGNOSING MISEDUCATIONS MISEMPHASISED MISEMPHASIZED MISPERSUADING MISSIONARISED MISSIONARIZED MITHRIDATISED MITHRIDATISES MITHRIDATISMS MITHRIDATIZES MODERNISATION MODIFICATIONS MOLDABILITIES MOLENDINARIES MOLLUSCICIDAL MOUNTAINSIDES MULTIGRAVIDAS MULTIPLICANDS MUNICIPALISED MYOCARDITISES NEURAMINIDASE NICOTINAMIDES NIDIFICATIONS NIGGARDLINESS NOMADISATIONS NOMADIZATIONS NONADMISSIONS NONCLASSIFIED NONDIAPAUSING NONEDITORIALS NONINDUSTRIAL NONSINUSOIDAL NONVALIDITIES OCCIDENTALISE OCCIDENTALISM OCCIDENTALIST ORCHIDOMANIAS OUTDISTANCING OVERDIAGNOSIS OVERIDEALISED OVERIDEALISES OVERIDEALIZES PAEDOPHILIACS PALINDROMISTS PALLIDOTOMIES PARASITICIDAL PARASITICIDES PAROCHIALISED PAROTIDITISES PEDANTICISING PEDESTRIANISE PEDESTRIANISM PEDESTRIANIZE PEDIATRICIANS PEDICULATIONS PENTACRINOIDS PENTAPLOIDIES PERIODICALIST PERIODISATION PEROXIDATIONS PHARYNGITIDES PHILANDERINGS PICTORIALISED PIDGINISATION PLATITUDINISE PLATITUDINOUS PODSOLISATION PODSOLIZATION PODZOLISATION POLITICALISED PORCELAINISED POSTDILUVIANS PRAEDIALITIES PREADMISSIONS PREINDUSTRIAL PRESANCTIFIED PRIMIGRAVIDAS PRIMORDIALISM PROBOSCIDIANS PRODIGALISING PRODIGALITIES PRUDENTIALISM PRUDENTIALIST PSEUDIMAGINES PTERIDOMANIAS PYRIDOXAMINES QUADRIENNIUMS QUADRIFARIOUS QUADRINOMIALS QUADRIPHONICS QUADRIPLEGIAS QUADRIPLEGICS QUADRISECTING QUADRISECTION QUASIPERIODIC QUINQUENNIADS RADIALISATION RADIATIONLESS RADIESTHESIAS RADIESTHESIST RADIOCHEMISTS RADIOGRAPHIES RADIOISOTOPES RADIOISOTOPIC RADIONUCLIDES RADIOPACITIES RADIOPHONISTS RADIOTHERMIES RADIOTHORIUMS RANDOMISATION RANGEFINDINGS READABILITIES READMINISTERS READVERTISING RECAPITALISED REDEDICATIONS REMILITARISED REMINERALISED REORDINATIONS REPRISTINATED RESIDENTIALLY REVALIDATIONS ROADABILITIES ROADBUILDINGS RUGGEDISATION SAILBOARDINGS SALICYLAMIDES SANDPAINTINGS SCRIMSHANDIED SCRIMSHANDIES SECTARIANISED SECTARIANIZED SECTIONALISED SECTIONALIZED SEDIMENTARILY SEDIMENTATION SEDITIONARIES SEMIARIDITIES SEMICARBAZIDE SEMIDIAMETERS SERODIAGNOSIS SLUGGARDISING SLUGGARDIZING SODOMITICALLY SOLDERABILITY SOLIFIDIANISM SOPHISTICATED SPADICIFLORAL SPAGHETTIFIED SPIRITUALISED SPIRITUALIZED SPREADABILITY STANDARDISING STANDARDIZING STAPHYLINIDAE STICKHANDLING STIPENDIARIES STIPENDIATING STRIDULATIONS STUDDINGSAILS SUBCLASSIFIED SUBDIVISIONAL SUBINDICATING SUBINDICATION SUBINDICATIVE SUBORDINARIES SUBORDINATING SUBORDINATION SUBORDINATIVE SUBSIDIARIATS SUBSIDISATION SUBSIDIZATION SULFADIAZINES SULFADIMIDINE SULFANILAMIDE SULPHADIAZINE SUPERADDITION SUPERDAINTIER SYNDICALISTIC TAXIDERMISING TECHNICALISED TENDERISATION TETRAPLOIDIES THIORIDAZINES TRADITIONISTS TRADITIONLESS TRADUCIANISMS TRADUCIANISTS TRAGICOMEDIES TRANQUILLISED TRANSACTINIDE TRANSLUCIDITY TRIPUDIATIONS TRISACCHARIDE UNASSIMILATED UNCAPITALISED UNCHRISTIANED UNDERPRAISING UNDISGUISABLE UNDISSOCIATED UNDISTRACTING UNDULATIONIST UNFEUDALISING UNIMPASSIONED UNIVERSALISED UNIVERSALIZED UNNILQUADIUMS UNPARASITISED UNPARASITIZED UNPLASTICISED UNPLASTICIZED UNSPECIALISED UNSPECIALIZED UNSTIGMATISED UNSTIGMATIZED VAGABONDISING VALEDICTORIES VANDALISATION VASODILATIONS VAUDEVILLIANS VAUDEVILLISTS VELOCIPEDIANS VIDEOGRAPHIES VINYLCYANIDES WELDABILITIES WINDBAGGERIES XENODIAGNOSIS