There are 474 twelve-letter words containing A, D, N and 2S, https://www.bestwordlist.com/c/a/5/12letterwordswithadnss.htm ABSCONDENCES ABSURDNESSES ACCURSEDNESS ADAPTIVENESS ADDICTEDNESS ADENOVIRUSES ADEQUATENESS ADHESIVENESS ADOLESCENCES ADOPTIANISMS ADOPTIANISTS ADOPTIONISMS ADOPTIONISTS ADORABLENESS ADROITNESSES ADSCRIPTIONS ADULTESCENTS ADVENTURISMS ADVENTURISTS ADVERTISINGS AFFECTEDNESS AGGRANDISERS ALDOPENTOSES ALDOSTERONES ALEXANDERSES AMAZEDNESSES ANDROGENESES ANDROGENESIS ANDROLOGISTS ANESTHETISED ANISODACTYLS ANODISATIONS ANTIADITISES ARABINOSIDES ASCENDANCIES ASCENDENCIES ASSASSINATED ASSORTEDNESS ASTEROIDEANS ASTOUNDMENTS ASTRONOMISED BACKSLIDINGS BACKWARDNESS BASTARDISING BIDDABLENESS BLADDERNOSES BONDMANSHIPS BONDSERVANTS BOUNDARYLESS BRASSFOUNDER CALENDARISES CALENDARISTS CANDESCENCES CANDIDNESSES CANDLEFISHES CANDLESTICKS CANDYFLOSSES CANISTERISED CANKEREDNESS CLADOGENESES CLADOGENESIS COMPASSIONED CONSOLIDATES CONTREDANSES COTRANSDUCES COWARDLINESS CRESCENTADES CROSSBANDING CUSPIDATIONS DAINTINESSES DAMASCENINGS DAMNABLENESS DAPPERNESSES DARINGNESSES DAUPHINESSES DEACCESSIONS DEADLINESSES DEBARRASSING DEBONAIRNESS DECARBONISES DECUSSATIONS DEFENSATIVES DEGUSTATIONS DELASSEMENTS DELICATENESS DELICATESSEN DEMAGNETISES DEMIBASTIONS DEMONIACISMS DEMONIANISMS DEMONSTRATES DEPRAVEDNESS DESAGREMENTS DESALINATORS DESALINISING DESANCTIFIES DESCENSIONAL DESECRATIONS DESICCATIONS DESIGNATIONS DESIPRAMINES DESOLATENESS DESPERATIONS DESPUMATIONS DESTINATIONS DETACHEDNESS DETAILEDNESS DETASSELLING DETESTATIONS DEVASTATIONS DIACHRONISMS DIAGONALISES DIALYSATIONS DIATESSARONS DIATONICISMS DIGRESSIONAL DILATORINESS DIPSOMANIACS DISABLEMENTS DISAMENITIES DISANALOGIES DISANALOGOUS DISANNULLERS DISARMAMENTS DISAVENTROUS DISAVENTURES DISBANDMENTS DISCANDYINGS DISCARDMENTS DISCOMEDUSAN DISCONSOLATE DISCOPHORANS DISCORDANCES DISCREPANCES DISCUSSIONAL DISEASEDNESS DISENSLAVING DISENTANGLES DISENTHRALLS DISENTRANCES DISENTRAYLES DISFRANCHISE DISGARNISHED DISGARNISHES DISGARRISONS DISHARMONIES DISHARMONISE DISHWASHINGS DISINFESTANT DISLOCATIONS DISMALNESSES DISMANTLINGS DISMASTMENTS DISMAYEDNESS DISMUTATIONS DISORGANISED DISORGANISER DISORGANISES DISORGANIZES DISPENSARIES DISPENSATION DISPENSATIVE DISPENSATORS DISPENSATORY DISPLEASANCE DISPLEASANTS DISPUTATIONS DISRELATIONS DISSEMBLANCE DISSEMINATED DISSEMINATES DISSEMINATOR DISSERTATING DISSERTATION DISSEVERANCE DISSHEATHING DISSIPATIONS DISSOCIATING DISSOCIATION DISSONANCIES DISTANCELESS DISTRACTIONS DISTRINGASES DISTURBANCES DOCKISATIONS DOWNSTAIRSES DOWNWARDNESS DRABBINESSES DRACONTIASES DRACONTIASIS DRAFTINESSES DRAFTSPERSON DRAGONFISHES DRAUGHTINESS DRAWLINGNESS DREADFULNESS DREAMFULNESS DREAMINESSES DREARINESSES DRESSMAKINGS DUNIEWASSALS DUNNIEWASSAL DWARFISHNESS DYNASTICISMS DYSPAREUNIAS DYSSYNERGIAS EDACIOUSNESS EDUCATEDNESS ELATEDNESSES ENDORSATIONS ENLARGEDNESS EUDAEMONISMS EUDAEMONISTS EUDAIMONISMS EUDAIMONISTS EVERYDAYNESS FANTASYLANDS FAVOUREDNESS FINASTERIDES FUNDRAISINGS GANGLIOSIDES GANGSTERDOMS GASTROPODANS GLADSOMENESS GLOSSODYNIAS GORMANDISERS GOURMANDISES GOURMANDISMS GRADABLENESS GRANDEESHIPS GRANDMASTERS GRAVIDNESSES GROUNDMASSES GROUNDSHARES HAIRDRESSING HALLOWEDNESS HAMPEREDNESS HANDEDNESSES HANDFASTINGS HANDSHAKINGS HANDSOMENESS HANDYPERSONS HANSARDISING HARDINGGRASS HEADLESSNESS HEATEDNESSES HISPANICISED HOLLANDAISES HOUSEHUSBAND HUSBANDLANDS HUSBANDLIEST HYDROGENASES ICOSAHEDRONS IDIOSYNCRASY IDOLISATIONS INADMISSIBLE INADMISSIBLY INDORSATIONS INFLATEDNESS INTERSTRANDS INWARDNESSES IRIDISATIONS JADISHNESSES JAGGEDNESSES LABOUREDNESS LADYLIKENESS LANDLESSNESS LANDLORDISMS LANDSCAPINGS LANDSCAPISTS LANDSKNECHTS LAUDABLENESS LEADENNESSES LEOPARDSKINS LOADSAMONEYS LOADSAMONIES MAIDENLINESS MAIDSERVANTS MAIMEDNESSES MANDARINISMS MANDOLINISTS MANIFOLDNESS MANSPREADERS MARKEDNESSES MARSHLANDERS MASCULINISED MASSARANDUBA MASSERANDUBA MEASUREDNESS MERCHANDISES MIDDENSTEADS MISADJUSTING MISDEMEANORS MISDIAGNOSED MISDIAGNOSES MISDIAGNOSIS MISGUIDANCES MISHANDLINGS MISPLEADINGS MISTREADINGS MODERATENESS NECESSITATED NONADMISSION NONSTANDARDS NURSERYMAIDS OBDURATENESS ODONTOBLASTS ORDINARINESS OUTDATEDNESS OUTDISTANCES OUTPASSIONED OXIDISATIONS PACHYSANDRAS PAEDOGENESES PAEDOGENESIS PALLIDNESSES PAMPEREDNESS PARASCENDERS PASQUINADERS PASTURELANDS PEAKEDNESSES PEDANTICISES PEDANTICISMS PERSONALISED PLACIDNESSES PREADMISSION PREPAREDNESS PRUSSIANISED PRUSSIANIZED PSALMODISING PSEUDOMONADS QUADRASONICS RAGGEDNESSES RANCIDNESSES RANDOMNESSES READABLENESS READDRESSING READMISSIONS RELANDSCAPES RETRANSFUSED RHAPSODISING RIDESHARINGS SACREDNESSES SALMAGUNDIES SANCTUARISED SANDBLASTERS SANDBLASTING SANDCHERRIES SANDERSWOODS SAPINDACEOUS SARDONICISMS SAUROPSIDANS SCAFFOLDINGS SCANDALISERS SCANDALISING SCANDALIZERS SCANDALOUSLY SCINCOIDIANS SCINDAPSUSES SCOLOPENDRAS SCORPAENOIDS SCRAGGEDNESS SCRIMSHANDER SCRIMSHANKED SEAREDNESSES SEDATENESSES SEMIDARKNESS SERVANTHOODS SHARPBENDERS SHERARDISING SHOOTAROUNDS SIDEROPENIAS SINGULARISED SINUSOIDALLY SKRIMSHANKED SLANDEROUSLY SLUGGARDNESS SLUMBERLANDS SNOWBLADINGS SNOWBOARDERS SOMATOMEDINS SOUTHLANDERS SPEEDSKATING SPODOMANCIES SPRINGBOARDS SQUANDERINGS STADDLESTONE STANDARDISED STANDARDISER STANDARDISES STANDARDIZES STANDARDLESS STANDPATTERS STANDPATTISM STAPHYLINIDS STARCHEDNESS STEADINESSES STEDFASTNESS STELLERIDANS STENOCARDIAS STEPDANCINGS STICKHANDLES STIPENDIATES STRANDEDNESS STRANDWOLVES STRIDULANCES STRINGBOARDS STUDDINGSAIL SUBAUDITIONS SUBCARDINALS SUBDEANERIES SUBDOMINANTS SUBINDICATES SUBMANIFOLDS SUBORDINATES SUBSTANDARDS SUBURBANISED SUCCEDANEOUS SUCCEDANEUMS SULFADOXINES SULFONAMIDES SUPERABOUNDS SUPERHARDENS SURADDITIONS SURTARBRANDS SURTURBRANDS SYNDACTYLIES SYNDACTYLISM SYNDACTYLOUS SYNDICALISMS SYNDICALISTS SYNDICATIONS TAWDRINESSES TOWARDLINESS TOWARDNESSES TRADESPERSON TRANSDUCTORS TRANSGENDERS TRANSGRESSED TRANSPONDERS TRANSPONDORS TRANSSHIPPED UNASSISTEDLY UNASSOCIATED UNBIASEDNESS UNCANDIDNESS UNCLASSIFIED UNDERCLASSES UNDERPASSION UNDERPRAISES UNDESIRABLES UNEMPHASISED UNFADINGNESS UNFASTIDIOUS UNFEUDALISES UNSOCIALISED UNSTEADINESS UNTOWARDNESS UNWASHEDNESS UPWARDNESSES VAGABONDISES VAGABONDISMS VANGUARDISMS VANGUARDISTS VARIEDNESSES VINDICATRESS VINEYARDISTS VOIDABLENESS WALDSTERBENS WENSLEYDALES WHISKERANDOS WINDLESTRAES WINDLESTRAWS WITHSTANDERS