There are 595 fifteen-letter words containing A, C, N and 2S, https://www.bestwordlist.com/c/a/5/15letterwordswithacnss.htm ABSORBEFACIENTS ABSTRACTIONISMS ABSTRACTIONISTS ACCEPTINGNESSES ACCESSARINESSES ACCESSORINESSES ACCOMPLISHMENTS ACCOUNTABLENESS ACCOUNTANTSHIPS ACHONDROPLASIAS ACQUISITIVENESS ACRIMONIOUSNESS ADDICTIVENESSES AERODYNAMICISTS AEROELASTICIANS AFFECTIVENESSES AGRANULOCYTOSES AGRANULOCYTOSIS ALCOHOLISATIONS ALLEGORICALNESS ANAMORPHOSCOPES ANCYLOSTOMIASES ANCYLOSTOMIASIS ANDROMONOECISMS ANFRACTUOSITIES ANTAPHRODISIACS ANTIALCOHOLISMS ANTICAPITALISMS ANTICAPITALISTS ANTICONVULSANTS ANTICONVULSIVES ANTIHISTAMINICS ANTIMONARCHISTS ANTINEOPLASTICS ANTINUCLEARISTS ANTIPHLOGISTICS ANTIRADICALISMS ANTISEPTICISING ANTISOCIALITIES ANTISYPHILITICS APPRENTICESHIPS ARACHNOIDITISES ARCHEOBOTANISTS ASSOCIATIONISMS ASSOCIATIONISTS ASTRODYNAMICIST ATROCIOUSNESSES AUDACIOUSNESSES BACKSCATTERINGS BACKSCRATCHINGS BAREFACEDNESSES BIOACOUSTICIANS BIOASTRONAUTICS BIOSTATISTICIAN BLOCKHEADEDNESS BRAINSICKNESSES BRAUNSCHWEIGERS CANISTERISATION CAPACIOUSNESSES CAPITALISATIONS CARAMELISATIONS CARCINOSARCOMAS CARNIVOROUSNESS CASTANOSPERMINE CASTRAMETATIONS CATECHUMENSHIPS CATEGORICALNESS CATEGORISATIONS CAUSATIVENESSES CAUSELESSNESSES CEASELESSNESSES CENSURABILITIES CENTENARIANISMS CENTRALISATIONS CENTRICALNESSES CENTRIFUGALISES CENTRIPETALISMS CHANCELLORSHIPS CHANGEFULNESSES CHANNELISATIONS CHAPTALISATIONS CHLORITISATIONS CHOLESTYRAMINES CHOLINESTERASES CHROMATICNESSES CINCHONISATIONS CIRCUMSTANTIALS CLAMOROUSNESSES CLANDESTINENESS CLANDESTINITIES CLASSICALNESSES CLASSIFICATIONS CLASSLESSNESSES CLEARHEADEDNESS CLEAVABLENESSES COCHAIRMANSHIPS COESSENTIALNESS COINSTANTANEOUS COINVESTIGATORS COLDHEARTEDNESS COLONISATIONIST COLORABLENESSES COLORFASTNESSES COMBATIVENESSES COMFORTABLENESS COMMANDANTSHIPS COMMENDABLENESS COMMENSURATIONS COMMISSIONAIRES COMMONPLACENESS COMPACTEDNESSES COMPARATIVENESS COMPASSIONATELY COMPASSIONATING COMPLIANTNESSES COMPLICATEDNESS COMRADELINESSES CONCEIVABLENESS CONCEPTUALISERS CONCESSIONAIRES CONCESSIONARIES CONCESSIONNAIRE CONCRETISATIONS CONFESSIONALISM CONFESSIONALIST CONFESSIONARIES CONFORMABLENESS CONFUSABILITIES CONGEALABLENESS CONGENIALNESSES CONGRESSIONALLY CONJUGATENESSES CONQUERABLENESS CONSANGUINITIES CONSECRATEDNESS CONSENTANEITIES CONSENTANEOUSLY CONSERVATIONIST CONSERVATORIUMS CONSERVATORSHIP CONSIDERATENESS CONSIMILARITIES CONSPIRATRESSES CONSTITUTIONALS CONSUBSTANTIATE CONSULTANTSHIPS CONTESSERATIONS CONTESTABLENESS CONTINENTALISMS CONTINENTALISTS CONTINUALNESSES CONTRACTIVENESS CONTRAPOSITIONS CONTRAPOSITIVES CONTRARIOUSNESS CONVALESCENCIES CONVERSABLENESS CONVERSATIONISM CONVERSATIONIST CONVOCATIONISTS CONVULSIONARIES COOPERATIONISTS COOPERATIVENESS CORPORATENESSES CORPOREALNESSES CORPUSCULARIANS CORRELATIVENESS COSMOPOLITANISM COTRANSDUCTIONS COUNTERASSAULTS COUNTERMEASURES COUNTERSHADINGS CRAPULOUSNESSES CRASHWORTHINESS CRESTFALLENNESS CROSSOPTERYGIAN CRYSTALISATIONS CRYSTALIZATIONS CRYSTALLINITIES CRYSTALLISATION CUSTOMARINESSES CYBERSQUATTINGS CYCLOOXYGENASES CYLINDRICALNESS CYTOTAXONOMISTS DEBAUCHEDNESSES DECASUALISATION DECHRISTIANISED DECHRISTIANISES DECHRISTIANIZES DECIMALISATIONS DECOLONISATIONS DECOLORISATIONS DECOMPENSATIONS DECONSECRATIONS DELOCALISATIONS DESACRALISATION DICTATORIALNESS DIFFRACTIVENESS DISACKNOWLEDGES DISAFFECTEDNESS DISAPPLICATIONS DISASSOCIATIONS DISCIPLINARIANS DISCIPLINARIUMS DISCOLOURATIONS DISCONSOLATIONS DISCONTINUANCES DISCOUNTENANCES DISCOURAGEMENTS DISCRIMINATIONS DISENCHANTMENTS DISENCUMBRANCES DISENFRANCHISED DISENFRANCHISES DISGRACEFULNESS DISINCARCERATES DISINCLINATIONS DISINCORPORATES DISINHERITANCES DISSATISFACTION DISSOCIABLENESS ECLAIRCISSEMENT EDUCATIONALISTS EFFECTUALNESSES EFFICACIOUSNESS ELECTROANALYSES ELECTROANALYSIS EMBRACINGNESSES EMPIRICALNESSES EMULSIFICATIONS ENCYCLOPAEDISMS ENCYCLOPAEDISTS EPISCOPALIANISM EQUIVOCALNESSES ESTERIFICATIONS EVANGELICALISMS EVANGELICALNESS EVOCATIVENESSES EXACERBESCENCES EXCEPTIONALISMS EXCEPTIONALISTS EXCEPTIONALNESS EXCITABLENESSES EXCLAUSTRATIONS EXCUSABLENESSES EXECRABLENESSES FACETIOUSNESSES FANATICALNESSES FANATICISATIONS FANTASTICALNESS FANTASTICATIONS FICTIONISATIONS FORENSICALITIES FRACTIOUSNESSES FUGACIOUSNESSES FURACIOUSNESSES GRACELESSNESSES GRAMMATICALNESS GRAPHICALNESSES HEARTSICKNESSES HERESTHETICIANS HIERACOSPHINGES HIERACOSPHINXES HYPOCHONDRIASES HYPOCHONDRIASIS HYPOCHONDRIASMS HYPOCHONDRIASTS ICHTHYOSAURIANS IDENTICALNESSES IDIOMATICALNESS IDIOMATICNESSES IDIOTICALNESSES ILLOGICALNESSES IMMEDICABLENESS IMPLICATIVENESS IMPRACTICALNESS INACCESSIBILITY INCANDESCENCIES INCAPABLENESSES INCAPACIOUSNESS INCESSANTNESSES INCREMENTALISMS INCREMENTALISTS INCURABLENESSES INEFFECTUALNESS INEXCUSABLENESS INFRASTRUCTURES INSCRIBABLENESS INSCRUTABLENESS INSIGNIFICANCES INSOCIABILITIES INTERACTIONISMS INTERACTIONISTS INTERSCHOLASTIC INTERSECTIONALS INTRACTABLENESS INTRANSIGEANCES INTRANSIGENCIES INTRICATENESSES INTRINSICALNESS IRASCIBLENESSES IRREVOCABLENESS ISMATICALNESSES ISOTHIOCYANATES KARSTIFICATIONS LACTIFEROUSNESS LARYNGOSCOPISTS LEUCAEMOGENESES LEUCAEMOGENESIS LEXICALISATIONS LICENTIATESHIPS LISSENCEPHALIES LISSENCEPHALOUS LUCRATIVENESSES MACADAMISATIONS MAGNIFICENTNESS MALICIOUSNESSES MASCULINENESSES MASCULINISATION MATCHLESSNESSES MEDICALISATIONS MENISPERMACEOUS MERCENARINESSES MERCURIALNESSES METAFICTIONISTS METALINGUISTICS METAPHYSICISING MICROAGGRESSION MICROPULSATIONS MISACCEPTATIONS MISAPPLICATIONS MISCALCULATIONS MISCELLANARIANS MISCELLANEOUSLY MISCOMPUTATIONS MISCORRELATIONS MISGOVERNAUNCES MISPUNCTUATIONS MISTRANSCRIBING MISVOCALISATION MONOCHROMATISMS MONOSACCHARIDES MUCOSANGUINEOUS MUSICALISATIONS MUSICALIZATIONS NARCOTERRORISMS NARCOTERRORISTS NECESSARIANISMS NECESSARINESSES NEOCOLONIALISMS NEOCOLONIALISTS NEOCONSERVATISM NONCHARISMATICS NONCONSENSUALLY NONELASTICITIES NONPSYCHIATRIST NONSENSICALNESS NONSIGNIFICANTS NONSPECTACULARS NUCLEARISATIONS OCCASIONALITIES OPSONIFICATIONS ORACULOUSNESSES OVERCENTRALISES OVERCLASSIFYING OVERCOMPENSATES PANTISOCRATISTS PARADOXICALNESS PARALINGUISTICS PARASITICALNESS PEACEABLENESSES PEACELESSNESSES PECTINESTERASES PENTADACTYLISMS PHALLOCENTRISMS PHARISAICALNESS PHARMACOGNOSIES PHARMACOGNOSIST PHARYNGOSCOPIES PHENAKISTOSCOPE PHOSPHOCREATINS PICTORIALNESSES PINEALECTOMISES PLACELESSNESSES PLASTICISATIONS PLASTICIZATIONS POCOCURANTEISMS POLITICISATIONS POSTADOLESCENCE POSTADOLESCENTS POSTCONSONANTAL POSTSECONDARIES PRACTICABLENESS PRACTICALNESSES PRAGMATICALNESS PREADOLESCENCES PREANAESTHETICS PRECIPITANTNESS PRECIPITATENESS PREDICTABLENESS PREJUDICIALNESS PRINCIPALNESSES PROCESSIONALIST PROCESSIONARIES PROCRASTINATORS PROCREATIVENESS PROGNOSTICATORS PROJECTISATIONS PROSAICALNESSES PROSENCHYMATOUS PROVOCATIVENESS PSYCHOANALYSERS PSYCHOANALYSING PSYCHOANALYZERS PSYCHOHISTORIAN PUNCTUATIONISTS PURITANICALNESS QUATTROCENTISMS QUATTROCENTISTS RADICALISATIONS RANCOROUSNESSES RAPACIOUSNESSES REACTIONARYISMS RECANALISATIONS RECOLONISATIONS RECONDENSATIONS RECONNAISSANCES RECONNOISSANCES RECONSECRATIONS RECOVERABLENESS RECRYSTALLISING REPROACHFULNESS RESINIFICATIONS RESOCIALISATION RESPECTABLENESS RETROACTIVENESS REVOCABLENESSES ROSTROCARINATES SABERMETRICIANS SACCHARISATIONS SACCHARIZATIONS SACERDOTALISING SACRAMENTALISMS SACRAMENTALISTS SACRAMENTALNESS SACRAMENTARIANS SACROSANCTITIES SAGACIOUSNESSES SALACIOUSNESSES SALPINGECTOMIES SANCTIFICATIONS SANCTIMONIOUSLY SANGUIFICATIONS SANGUINOLENCIES SANSCULOTTERIES SAPONACEOUSNESS SAPONIFICATIONS SAPROGENICITIES SARCENCHYMATOUS SARRACENIACEOUS SATANICALNESSES SATIRICALNESSES SCANDALISATIONS SCANDALIZATIONS SCAREMONGERINGS SCATHEFULNESSES SCHEMATISATIONS SCHEMATIZATIONS SCHILLERISATION SCHOLARLINESSES SCHOOLMASTERING SCHOOLTEACHINGS SCINTILLASCOPES SCLEROTISATIONS SCLEROTIZATIONS SCRIBACIOUSNESS SCRIMSHANDERING SEARCHINGNESSES SECONDARINESSES SECTIONISATIONS SECTIONIZATIONS SECULARISATIONS SECULARIZATIONS SECURITISATIONS SECURITIZATIONS SEMIABSTRACTION SEMICENTENNIALS SEMICOLONIALISM SEMICRYSTALLINE SEMITRANSLUCENT SERICITISATIONS SERICITIZATIONS SEROPREVALENCES SERVICEABLENESS SERVOMECHANISMS SESQUICARBONATE SESQUICENTENARY SHOCKUMENTARIES SILICIFICATIONS SIMPLIFICATIONS SKEPTICALNESSES SOLIDIFICATIONS SOPHISTICATIONS SPECIALISATIONS SPECIALIZATIONS SPECULATIVENESS SPHERICALNESSES SPINTHARISCOPES SPIRONOLACTONES SPLANCHNOLOGIES STEEPLECHASINGS STEGOCEPHALIANS STRAITLACEDNESS STRATICULATIONS STRATIFICATIONS STRATOVOLCANOES STRUCTURALISING STULTIFICATIONS SUBASSOCIATIONS SUBCATEGORISING SUBCIVILISATION SUBCONTRACTINGS SUBMETACENTRICS SUBSPECIALISING SUBSPECIALIZING SUBVOCALISATION SUPERABUNDANCES SUPERFICIALNESS SUPERORGANICISM SUPERORGANICIST SUSPERCOLLATING SYMMETRICALNESS SYNCHRONISATION SYNCHRONISTICAL SYNCRETISATIONS SYNCRETIZATIONS SYNERGISTICALLY TEACHABLENESSES TECHNICALNESSES TELANGIECTASIAS TENACIOUSNESSES TERATOGENICISTS THICKHEADEDNESS THORACOCENTESES THORACOCENTESIS TOUCHABLENESSES TRACEABLENESSES TRACKLESSNESSES TRACTABLENESSES TRANSCENDENCIES TRANSCENDENTALS TRANSHISTORICAL TRANSLUCIDITIES TRANSMITTANCIES TREACHEROUSNESS TRICHINISATIONS TRISOCTAHEDRONS ULTRAPRECISIONS UNCANONICALNESS UNCEASINGNESSES UNCERTAINNESSES UNCHRISTIANISED UNCHRISTIANISES UNCHRISTIANIZES UNCLEANLINESSES UNCLIMBABLENESS UNCOMBATIVENESS UNCOMPASSIONATE UNCONSENTANEOUS UNCREATEDNESSES UNEQUIVOCALNESS UNMUSICALNESSES UNNECESSARINESS UNPEACEABLENESS UNPRACTICALNESS UNPRACTISEDNESS UNSATISFACTIONS UNSECTARIANISMS UNSOCIABILITIES UNSOPHISTICATED UNTACTFULNESSES UNTEACHABLENESS UNTRACTABLENESS VASCULARISATION VASOCONSTRICTOR VERACIOUSNESSES VICARIOUSNESSES VICISSITUDINARY VINDICATIVENESS VIVACIOUSNESSES VORACIOUSNESSES WAPPENSCHAWINGS WELTANSCHAUUNGS WHIMSICALNESSES