There are 467 thirteen-letter words containing A, 2N, S and U, https://www.bestwordlist.com/c/a/5/13letterwordswithannsu.htm ACCENTUATIONS ACCOUNTANCIES ACQUAINTANCES AFTERBURNINGS AGGLUTINOGENS AMINOTOLUENES AMUSINGNESSES ANACHRONOUSLY ANALOGOUSNESS ANDROGYNOUSLY ANGULARNESSES ANNOUNCEMENTS ANNUITISATION ANNUNCIATIONS ANOMALOUSNESS ANONYMOUSNESS ANTEDILUVIANS ANTENNIFEROUS ANTICOMMUNISM ANTICOMMUNIST ANTIGLOBULINS ANTIHUMANISMS ANTIHUMANISTS ANTINAUSEANTS ANTINEUTRINOS ANTIQUENESSES ANTISMUGGLING ANTISUBMARINE ANXIOUSNESSES APPURTENANCES ARUNDINACEOUS AUGMENTATIONS AYUNTAMIENTOS BANCASSURANCE BANEFULNESSES BIGNONIACEOUS BILDUNGSROMAN BLUESNARFINGS BRANFULNESSES BRASSFOUNDING BUCCANEERINGS BUOYANTNESSES BUSINESSWOMAN CALUMNIATIONS CANDLESNUFFER CARILLONNEURS CATAMOUNTAINS CENTURIATIONS CHANGEAROUNDS CHANGEFULNESS CINCHONACEOUS COLUMNIATIONS COMMUNALISING COMMUNISATION CONCLUSIONARY CONCUBINARIES CONGLUTINATES CONGRATULANTS CONJUGATENESS CONNATURALISE CONNUBIALISMS CONSANGUINITY CONSECTANEOUS CONSENTANEOUS CONSEQUENTIAL CONSPURCATION CONSTUPRATING CONSTUPRATION CONSULTANCIES CONSULTATIONS CONSUMMATIONS CONTINUALNESS CONTINUATIONS CONTINUATIVES CONTRAPUNTIST CONVULSIONARY COTRANSDUCING COUNTENANCERS COUNTERAGENTS COUNTERSTAINS CUTINISATIONS CUTINIZATIONS DANGEROUSNESS DAUNORUBICINS DAUNTLESSNESS DENATURATIONS DENTILINGUALS DENUNCIATIONS DETRUNCATIONS DIBENZOFURANS DIFUNCTIONALS DISANNULLINGS DISANNULMENTS DISFUNCTIONAL DUNNIEWASSALS DYSFUNCTIONAL ENCAPSULATING ENCAPSULATION ENCRUSTATIONS ENCUMBRANCERS ENDONUCLEASES ENDURABLENESS ENSANGUINATED ENTERCHAUNGES EUTHANATISING EVENTUALISING EXSANGUINATED EXSANGUINATES EXSANGUINEOUS EXTINGUISHANT FAULTFINDINGS FENFLURAMINES FLAUNTINESSES FLUORINATIONS FLUPHENAZINES FORTUNATENESS FOUNDATIONERS FOUNTAINHEADS FRUMENTATIONS FUNCTIONALISM FUNCTIONALIST FUNCTIONARIES GAINFULNESSES GELANDESPRUNG GENICULATIONS GENTIANACEOUS GOURMANDISING GROUNDSHARING GUANETHIDINES HALLUCINOGENS HAUSSMANNISED HAUSSMANNISES HAUSSMANNIZED HAUSSMANNIZES HEARTBURNINGS HOUSECLEANING HUMANISATIONS HUMANITARIANS HUMANIZATIONS HUNTSMANSHIPS ILLUMINATIONS IMMUNISATIONS IMMUNIZATIONS INAUDIBLENESS INAUGURATIONS INCAPSULATING INCAPSULATION INCONSTRUABLE INCRUSTATIONS INCUMBRANCERS INCUNABULISTS INCURABLENESS INFIBULATIONS INHUMANNESSES INOCCUPATIONS INOSCULATIONS INQUISITIONAL INSINUATINGLY INSTANTANEOUS INSTAURATIONS INSTINCTUALLY INSTITUTIONAL INSTRUCTIONAL INSTRUMENTALS INSUBORDINATE INSUBSTANTIAL INSUFFLATIONS INTEROSCULANT INTRAPRENEURS INTRAVENOUSLY INVULTUATIONS ISOAGGLUTININ LANGUIDNESSES LANGUISHINGLY LANGUISHMENTS LIEUTENANCIES LINGUISTICIAN LUTEINISATION MAGNANIMOUSLY MAGNITUDINOUS MALNUTRITIONS MANGANIFEROUS MANIPULATIONS MASCULINENESS MASCULINISING MASCULINIZING MAUDLINNESSES MENSTRUATIONS MENSURATIONAL MINIATURISING MISUNDERSTAND MONUMENTALISE MOUNTAINOUSLY MOUNTAINSIDES MOUNTEBANKISM MOUNTENAUNCES MULTICHANNELS MUNDANENESSES NANOSTRUCTURE NATURALNESSES NAUGHTINESSES NEBULISATIONS NEBULIZATIONS NEFARIOUSNESS NEURAMINIDASE NEURASTHENIAC NEURASTHENIAS NEURASTHENICS NEUROIMAGINGS NEUTRALNESSES NOMENCLATURES NOMENKLATURAS NONAUTONOMOUS NONCHAUVINIST NONCOLOURFAST NONCONSENSUAL NONCONTAGIOUS NONDIAPAUSING NONEDUCATIONS NONGREGARIOUS NONHOMOSEXUAL NONINDUSTRIAL NONINSURANCES NONMEASURABLE NONMONOGAMOUS NONMUNICIPALS NONSEQUENTIAL NONSINUSOIDAL NONSTRUCTURAL NONUNIVERSALS NOTOUNGULATES NOUMENALITIES OBNUBILATIONS OUTDISTANCING OUTORGANISING OUTPASSIONING OUTSTANDINGLY OVERINSURANCE PAINFULNESSES PANDAEMONIUMS PANHELLENIUMS PAUNCHINESSES PENINSULARITY PENINSULATING PIQUANTNESSES PLASTOQUINONE PROPUGNATIONS PRUSSIANISING PRUSSIANIZING PUNCTULATIONS PUNCTURATIONS PUTANGITANGIS QUADRIENNIUMS QUANTISATIONS QUANTITATIONS QUANTIZATIONS QUATERNIONIST QUESTIONNAIRE QUINQUENNIADS QUINQUENNIALS RACONTEURINGS RANCOROUSNESS RAUNCHINESSES REFOUNDATIONS REJUVENATIONS REMUNERATIONS RENATURATIONS RENUNCIATIONS RESUPINATIONS RETRANSFUSING ROUTINISATION SANCTIMONIOUS SANCTUARISING SANCTUARIZING SANGUINOLENCY SATURNALIANLY SATURNINITIES SENSORINEURAL SENSUALNESSES SINGULARISING SINGULARIZING SOMNAMBULANCE SOMNAMBULANTS SOUNDTRACKING SPONTANEOUSLY SQUANDERINGLY SQUANDERMANIA STAUNCHNESSES STERNUTATIONS STRANGULATING STRANGULATION SUBALTERNANTS SUBGENERATION SUBINDICATING SUBINDICATION SUBLIEUTENANT SUBLINEATIONS SUBORDINATING SUBORDINATION SUBTERRANEANS SUBURBANISING SUBURBANIZING SUBVENTIONARY SULFONMETHANE SULPHONATIONS SUPERABUNDANT SUPERANNUABLE SUPERANNUATED SUPERANNUATES SUPERDOMINANT SUPERNATATION SUPERNATIONAL SUPPLANTATION SUPRANATIONAL SUSTENTATIONS TENACIOUSNESS TRANQUILISING TRANSDUCTANTS TRANSDUCTIONS TRANSFIGURING TRANSFUSIONAL TRANSHUMANCES TRANSLUCENCES TRANSLUCENTLY TRANSMOUNTAIN TRANSMUTATION TRANSUDATIONS TRANSUMPTIONS TUNABLENESSES TYRANNOSAURID TYRANNOSAURUS TYRANNOUSNESS ULTRAMONTANES UNACCEPTANCES UNADVENTUROUS UNADVISEDNESS UNAMIABLENESS UNANIMOUSNESS UNAPOLOGISING UNASCERTAINED UNASHAMEDNESS UNAWARENESSES UNBIASSEDNESS UNCANNINESSES UNCEASINGNESS UNCERTAINNESS UNCERTAINTIES UNCHRISTIANED UNCHRISTIANLY UNCLEANLINESS UNCLEANNESSES UNCLEARNESSES UNCOMPENSATED UNCOMPLAISANT UNCONSECRATED UNCONSECRATES UNCONSTRAINED UNCONSTRAINTS UNCONSUMMATED UNCONTESTABLE UNCONVERSABLE UNCREATEDNESS UNDAUNTEDNESS UNDERBEARINGS UNDERBLANKETS UNDERCLASSMAN UNDERCLASSMEN UNDERCOATINGS UNDERDIAGNOSE UNDERDRAWINGS UNDERGARMENTS UNDERLAYMENTS UNDERMANNINGS UNDERMEANINGS UNDERPASSIONS UNDERPAYMENTS UNDERPRAISING UNDERSEALINGS UNDERSTAFFING UNDERSTANDERS UNDERSTANDING UNDESCENDABLE UNDIAGNOSABLE UNDISTRACTING UNDULATIONIST UNEARTHLINESS UNEATABLENESS UNESSENTIALLY UNFAILINGNESS UNFASHIONABLE UNFASHIONABLY UNFEUDALISING UNGAINSAYABLE UNGUARDEDNESS UNHANDINESSES UNHAPPINESSES UNHEALTHINESS UNILINGUALISM UNILINGUALIST UNIMPASSIONED UNIMPORTANCES UNIONISATIONS UNIONIZATIONS UNITARIANISMS UNIVERSALNESS UNLEARNEDNESS UNMANLINESSES UNMANNERLIEST UNMEANINGNESS UNMECHANISING UNMINISTERIAL UNMUSICALNESS UNNATURALISED UNNATURALISES UNNATURALIZES UNNATURALNESS UNNECESSARILY UNNILQUADIUMS UNOBSERVANCES UNPRESENTABLE UNREADINESSES UNREASONINGLY UNREGENERATES UNREPENTANCES UNRETURNABLES UNSAINTLINESS UNSANCTIFYING UNSATURATIONS UNSAVOURINESS UNSCABBARDING UNSCAVENGERED UNSENSATIONAL UNSENSUALISED UNSENSUALISES UNSENSUALIZED UNSENSUALIZES UNSENTIMENTAL UNSHAPELINESS UNSHARPNESSES UNSPARINGNESS UNSTAIDNESSES UNSTARTLINGLY UNSTAUNCHABLE UNSUBSTANTIAL UNSUSTAINABLE UNSUSTAINABLY UNTACTFULNESS UNTAINTEDNESS UNTAMABLENESS UNTAMEDNESSES UNTENABLENESS UNTRANSFORMED UNTRANSMITTED UNTRANSPARENT UNTRESPASSING UNTUNABLENESS UNUSUALNESSES UNVULGARISING UNWEARIEDNESS UNWOMANLINESS URBANISATIONS URBANIZATIONS VANQUISHMENTS VERUMONTANUMS VOLUNTARINESS VULCANISATION ZINJANTHROPUS