There are 704 thirteen-letter words containing A, C, 2N and T, https://www.bestwordlist.com/c/a/5/13letterwordswithacnnt.htm ACCENTUATIONS ACCEPTINGNESS ACCOMPANIMENT ACCOUNTANCIES ACETAMINOPHEN ACQUAINTANCES ACQUITTANCING ACTINOURANIUM ACUPUNCTURING AMNIOCENTESES AMNIOCENTESIS ANACHRONISTIC ANCIENTNESSES ANDROCENTRISM ANGLICISATION ANGLICIZATION ANNOUNCEMENTS ANNUNCIATIONS ANTHELMINTHIC ANTHELMINTICS ANTHRACYCLINE ANTHROPOGENIC ANTICHRISTIAN ANTICIPATIONS ANTICLINORIUM ANTICOAGULANT ANTICOLLISION ANTICOLONIALS ANTICOMMUNISM ANTICOMMUNIST ANTICORROSION ANTIDESICCANT ANTIELECTRONS ANTIGENICALLY ANTIHIJACKING ANTIMECHANIST ANTIMNEMONICS ANTINARCOTICS ANTINEPHRITIC ANTINOMICALLY ANTIOBSCENITY ANTIRECESSION ANTIREJECTION ANTIROMANTICS APPERTAINANCE APPURTENANCES ASCENSIONISTS ASCERTAINMENT ASTRINGENCIES AUCTIONEERING AUTOINFECTION AVERRUNCATING AVERRUNCATION BENEDICTIONAL BENEFICENTIAL BENEFICIATING BENEFICIATION BICENTENARIES BICENTENNIALS BICONDITIONAL BOTANOMANCIES CABINETMAKING CACHINNATIONS CALUMNIATIONS CANALISATIONS CANALIZATIONS CANCELLATIONS CANISTERISING CANISTERIZING CANNIBALISTIC CANONISATIONS CANONIZATIONS CANTHAXANTHIN CANTILEVERING CANTILLATIONS CANTONISATION CANTONIZATION CARBONISATION CARBONIZATION CARBONYLATING CARBONYLATION CARNIFICATION CATAMOUNTAINS CENTRICALNESS CENTURIATIONS CHANNELOPATHY CHARLESTONING CHLORINATIONS CHONDROSTIANS CLANDESTINELY CLANDESTINITY COCAINISATION COCAINIZATION CODECLINATION COENENCHYMATA COGENERATIONS COGNATENESSES COGNOMINATING COGNOMINATION COINHERITANCE COLONISATIONS COLONIZATIONS COLUMNIATIONS COMANAGEMENTS COMBINATIONAL COMMENDATIONS COMMENTATIONS COMMUNICATING COMMUNICATION COMMUNISATION COMMUNITARIAN COMMUNIZATION COMPAGINATING COMPAGINATION COMPENSATIONS COMPLANATIONS COMPLIANTNESS CONCATENATING CONCATENATION CONCELEBRANTS CONCENTRATING CONCENTRATION CONCENTRATIVE CONCENTRATORS CONCERTINAING CONCILIATIONS CONCLAMATIONS CONCOMITANCES CONCOMITANTLY CONCREMATIONS CONCRETIONARY CONDEMNATIONS CONDENSATIONS CONDITIONABLE CONDITIONALLY CONDITIONATED CONDITIONATES CONFABULATING CONFABULATION CONFARREATION CONFECTIONARY CONFEDERATING CONFEDERATION CONFIGURATING CONFIGURATION CONFIRMATIONS CONFISCATIONS CONFLAGRATING CONFLAGRATION CONFORMATIONS CONFRATERNITY CONFRONTATION CONGLOBATIONS CONGLUTINATED CONGLUTINATES CONGLUTINATOR CONGRATULANTS CONGREGATIONS CONJUGATENESS CONJUGATIONAL CONJUNCTIONAL CONNATENESSES CONNATURALISE CONNATURALITY CONNATURALIZE CONNOTATIONAL CONNOTATIVELY CONNUMERATING CONNUMERATION CONSANGUINITY CONSECRATIONS CONSECTANEOUS CONSENTANEITY CONSENTANEOUS CONSEQUENTIAL CONSERVATIONS CONSIDERATION CONSIGNATIONS CONSOCIATIONS CONSOLIDATING CONSOLIDATION CONSONANTALLY CONSPIRATIONS CONSPURCATION CONSTATATIONS CONSTELLATING CONSTELLATION CONSTERNATING CONSTERNATION CONSTIPATIONS CONSTRAINABLE CONSTRAINEDLY CONSTUPRATING CONSTUPRATION CONSULTANCIES CONSULTATIONS CONSUMMATIONS CONTABESCENCE CONTAGIONISTS CONTAINERISED CONTAINERISES CONTAINERIZED CONTAINERIZES CONTAINERLESS CONTAINERPORT CONTAINERSHIP CONTAMINATING CONTAMINATION CONTAMINATIVE CONTAMINATORS CONTEMPLATING CONTEMPLATION CONTENTATIONS CONTERMINALLY CONTESTATIONS CONTIGNATIONS CONTINENTALLY CONTINUALNESS CONTINUATIONS CONTINUATIVES CONTORTIONATE CONTRABANDISM CONTRABANDIST CONTRABASSOON CONTRACEPTION CONTRACTIONAL CONTRADICTING CONTRADICTION CONTRAGESTION CONTRAPUNTIST CONTRARIANISM CONTRASTINGLY CONTRATERRENE CONTRAVENTION CONTRISTATION CONVALESCENTS CONVENTIONALS CONVENTIONARY CONVERSATIONS CONVERTAPLANE CONVERTIPLANE CONVERTOPLANE CONVOCATIONAL CONVOLUTIONAL COORDINATIONS CORINTHIANISE CORINTHIANIZE CORNIFICATION COTRANSDUCING COUNTENANCERS COUNTENANCING COUNTERACTING COUNTERACTION COUNTERAGENTS COUNTERCHANGE COUNTERDEMAND COUNTERMANDED COUNTERSTAINS CREDENTIALING CRENELLATIONS CRYOPLANKTONS CUTINISATIONS CUTINIZATIONS CYBERNETICIAN CYCLOPENTANES DAMNIFICATION DANDIFICATION DECARBONATING DECARBONATION DECLINATIONAL DECONCENTRATE DECONGESTANTS DECONTAMINANT DECONTAMINATE DENSIFICATION DENTICULATION DENUNCIATIONS DERACINATIONS DESANCTIFYING DETRUNCATIONS DIAGNOSTICIAN DIFUNCTIONALS DIGNIFICATION DISCIPLINANTS DISCRIMINANTS DISENCHANTERS DISENCHANTING DISENTRANCING DISFUNCTIONAL DISINFECTANTS DOCTRINARIANS DOCUMENTARIAN DOCUMENTATION DYSFUNCTIONAL ECONOMISATION ECONOMIZATION EMANCIPATIONS EMBRANCHMENTS ENANTIODROMIC ENANTIOTROPIC ENCAPSULATING ENCAPSULATION ENCHANTRESSES ENCHONDROMATA ENCOMPASSMENT ENCOURAGEMENT ENCROACHMENTS ENCRUSTATIONS ENCULTURATING ENCULTURATION ENTERCHAUNGED ENTERCHAUNGES ENTOMOSTRACAN ENTRANCEMENTS ENUNCIATIVELY FANATICALNESS FASCINATINGLY FIANCHETTOING FINANCIALISTS FONCTIONNAIRE FRACTIONATING FRACTIONATION FRACTIONISING FRACTIONIZING FRANCHISEMENT FRANCISATIONS FRANCIZATIONS FRANTICNESSES FUNCTIONALISM FUNCTIONALIST FUNCTIONALITY FUNCTIONARIES FUNCTIONATING GENETHLIACONS GENICULATIONS GENTIANACEOUS GLYCERINATING GNATHONICALLY HALLUCINATING HALLUCINATION HANDCRAFTSMAN HANDCRAFTSMEN HAPPENSTANCES HYPNOANALYTIC IDENTICALNESS IMMANENTISTIC IMMUNIFACIENT INABSTINENCES INACTIVATIONS INADVERTENCES INAPPETENCIES INCANDESCENTS INCANTATIONAL INCAPACITANTS INCAPSULATING INCAPSULATION INCARCERATING INCARCERATION INCARDINATING INCARDINATION INCARNATIONAL INCATENATIONS INCERTAINTIES INCESSANTNESS INCINERATIONS INCLINATIONAL INCLINATORIUM INCOGITANCIES INCOMPLIANTLY INCONSIDERATE INCONSONANTLY INCONSTANCIES INCONSTRUABLE INCONTESTABLE INCONTESTABLY INCORONATIONS INCORPORATING INCORPORATION INCRASSATIONS INCREMENTALLY INCRIMINATING INCRIMINATION INCRIMINATORS INCRIMINATORY INCRUSTATIONS INCUNABULISTS INDETERMINACY INDOCTRINATED INDOCTRINATES INDOCTRINATOR INDOMETHACINS INDUPLICATION INEXACTNESSES INEXPECTATION INFORMATICIAN INHABITANCIES INHARMONICITY INOCCUPATIONS INOSCULATIONS INSCRIPTIONAL INSIGNIFICANT INSTINCTUALLY INSTRUCTIONAL INTEMPERANCES INTERACTIONAL INTERAGENCIES INTERBRANCHES INTERCALATING INTERCALATION INTERCHAINING INTERCHANGERS INTERCHANGING INTERCHANNELS INTERCOLONIAL INTERCOLUMNAR INTERCOMMUNAL INTERLACEMENT INTERLOCATION INTEROSCULANT INTERPANDEMIC INTOXICATIONS INTRANSIGENCE INTRANSIGENCY INTRICATENESS INTRINSICALLY LICENTIATIONS LIEUTENANCIES LIGNIFICATION LINGUISTICIAN MACRONUTRIENT MAGNIFICATION MAGNIFICENTLY MAINTENANCING MALFUNCTIONED MANNERISTICAL MANUFACTURING MECHANISATION MECHANIZATION MEDICAMENTING METACOGNITION METENCEPHALON MICRONISATION MICRONIZATION MICROPLANKTON MINIFICATIONS MISCAPTIONING MISCEGENATING MISCEGENATION MONONUCLEATED MONOTONICALLY MOUNTENAUNCES MULTICHANNELS MUNDIFICATION NANOCOMPOSITE NANOPARTICLES NANOSTRUCTURE NARCOTISATION NARCOTIZATION NARROWCASTING NATIONALISTIC NAZIFICATIONS NECESSITARIAN NECESSITATING NECESSITATION NECROMANTICAL NEURASTHENIAC NEURASTHENICS NEUROANATOMIC NICOTINAMIDES NIDIFICATIONS NIGHTWATCHMAN NIGHTWATCHMEN NITRIFICATION NOCTIVAGATION NOMENCLATURAL NOMENCLATURES NONACCEPTANCE NONACCIDENTAL NONACCREDITED NONAESTHETICS NONALPHABETIC NONANALYTICAL NONANATOMICAL NONANTIBIOTIC NONARCHITECTS NONASSOCIATED NONATTACHMENT NONATTENDANCE NONBROADCASTS NONCANDIDATES NONCAPITALIST NONCHARACTERS NONCHAUVINIST NONCOLLEGIATE NONCOLOURFAST NONCOMBATANTS NONCOMMITTALS NONCOMPATIBLE NONCONCEPTUAL NONCONJUGATED NONCONSTANTLY NONCONTAGIOUS NONCOOPERATOR NONCREATIVITY NONCULTIVATED NONCUMULATIVE NONDEMOCRATIC NONDETACHABLE NONDIPLOMATIC NONEDUCATIONS NONELASTICITY NONELECTRICAL NONFUNCTIONAL NONHAEMOLYTIC NONHISTORICAL NONHYSTERICAL NONINDICTABLE NONINTERLACED NONINTOXICANT NONMYSTICALLY NONPARAMETRIC NONPATHOGENIC NONPOLITICIAN NONPRACTICING NONPRACTISING NONRESISTANCE NONRETRACTILE NONSECTARIANS NONSOCIALISTS NONSPECIALIST NONSTRUCTURAL NONSYSTEMATIC NONTHEATRICAL NONVOCATIONAL NOTIFICATIONS NOVOCENTENARY NULLIFICATION OCTINGENARIES OCTOCENTENARY OCTOGENARIANS ONOMASTICIANS ONTOGENICALLY ORGANOGENETIC ORNITHISCHIAN ORNITHOMANTIC OUTDISTANCING PANCYTOPENIAS PANDICULATION PANIFICATIONS PANTECHNICONS PARTHENOGENIC PATHOGNOMONIC PEDANTICISING PEDANTICIZING PEDUNCULATION PENICILLATION PENTACRINOIDS PENTAVALENCES PERNOCTATIONS PHOTOSCANNING PHTHALOCYANIN PHYCOXANTHINS PLACENTATIONS PLASTOCYANINS PLATINOCYANIC PONTIFICATING PONTIFICATION PORNIFICATION PRECAUTIONING PRECONISATION PRECONIZATION PRONUNCIATION PUNCTULATIONS PUNCTURATIONS QUANTIVALENCE QUINCENTENARY RACONTEURINGS RATIOCINATING RATIOCINATION REACQUAINTING RECOMBINATION RECONCENTRATE RECONTAMINATE RECRIMINATING RECRIMINATION REINCARNATING REINCARNATION REINOCULATING REINOCULATION REMONSTRANCES RENUNCIATIONS REPUNCTUATING REPUNCTUATION REUNIFICATION REVACCINATING REVACCINATION REVENDICATING REVENDICATION REVINDICATING REVINDICATION ROMANTICISING ROMANTICIZING SANCTIFYINGLY SANCTIMONIOUS SANCTUARISING SANCTUARIZING SATANICALNESS SCENARISATION SCENARIZATION SCINTILLANTLY SCINTILLATING SCINTILLATION SCINTILLISCAN SCINTISCANNER SEMICONSONANT SHORTCHANGING SIGNIFICANTLY SIGNIFICATION SOMNIFACIENTS SOUNDTRACKING STAUNCHNESSES STICKHANDLING SUBINDICATING SUBINDICATION SYNTACTICIANS TECHNICALNESS TECHNOMANIACS TECHNOPOLITAN TELENCEPHALON TENACIOUSNESS TERCENTENNIAL TOBACCANALIAN TRANSACTINIDE TRANSACTIONAL TRANSATLANTIC TRANSCENDENCE TRANSCENDENCY TRANSCENDENTS TRANSCRIPTION TRANSDUCTANTS TRANSDUCTIONS TRANSFECTIONS TRANSFERENCES TRANSHUMANCES TRANSILIENCES TRANSLOCATING TRANSLOCATION TRANSLUCENCES TRANSLUCENTLY TRANSMITTANCE TRANSMITTANCY TRANSPARENCES TRANSPIERCING TRANSPORTANCE TRIAMCINOLONE TRICENTENNIAL UNACCENTUATED UNACCEPTANCES UNACCOUNTABLE UNACCOUNTABLY UNACQUAINTING UNANTICIPATED UNASCERTAINED UNCALCULATING UNCERTAINNESS UNCERTAINTIES UNCHLORINATED UNCHRISTIANED UNCHRISTIANLY UNCOMPENSATED UNCOMPLAISANT UNCONDITIONAL UNCONSECRATED UNCONSECRATES UNCONSTRAINED UNCONSTRAINTS UNCONSUMMATED UNCONTAINABLE UNCONTESTABLE UNCOORDINATED UNCREATEDNESS UNDERCOATINGS UNDERREACTING UNDERREACTION UNDISTRACTING UNDOCTRINAIRE UNEXCEPTIONAL UNIMPORTANCES UNPUNCTUALITY UNREPENTANCES UNSANCTIFYING UNSTAUNCHABLE UNTACTFULNESS VACATIONLANDS VATICINATIONS VINIFICATIONS VOLCANISATION VOLCANIZATION VULCANISATION VULCANIZATION WAINSCOTTINGS ZINCIFICATION ZINKIFICATION ZOOPLANKTONIC