There are 602 thirteen-letter words containing A, 2N and 2S, https://www.bestwordlist.com/c/a/5/13letterwordswithannss.htm
ABSTENTIONISM ABSTENTIONIST ACCEPTINGNESS ADMINISTRANTS ADMONISHMENTS
AMNIOCENTESES AMNIOCENTESIS AMUSINGNESSES ANALOGOUSNESS ANCHORPERSONS
ANCIENTNESSES ANDROSPHINGES ANDROSPHINXES ANDROSTERONES ANESTHETISING
ANGULARNESSES ANIMATENESSES ANNIVERSARIES ANOMALOUSNESS ANONYMOUSNESS
ANTEPOSITIONS ANTIALIASINGS ANTIESTROGENS ANTIFEMINISMS ANTIFEMINISTS
ANTIHUMANISMS ANTIHUMANISTS ANTINAUSEANTS ANTINOVELISTS ANTIQUENESSES
ANTIRECESSION ANTISTROPHONS ANXIOUSNESSES APPEALINGNESS APPREHENSIONS
ARSPHENAMINES ASCENSIONISTS ASSASSINATING ASSASSINATION ASSENTIVENESS
ASTONISHINGLY ASTONISHMENTS ASTRINGENCIES ASTRONOMISING ASYNCHRONISMS
ATTENTIVENESS BANALISATIONS BANCASSURANCE BANEFULNESSES BARNSTORMINGS
BLANDISHMENTS BLUESNARFINGS BRAINLESSNESS BRAINSICKNESS BRAINWASHINGS
BRANFULNESSES BRASSFOUNDING BRILLIANTNESS BRINKMANSHIPS BRINKSMANSHIP
BUOYANTNESSES BUSINESSWOMAN CANALISATIONS CANISTERISING CANONISATIONS
CENTRICALNESS CHANGEFULNESS CHONDROSTIANS CIRCASSIENNES CLEANLINESSES
COGNATENESSES COLONISATIONS COMPANIONLESS COMPASSIONING COMPENSATIONS
COMPLIANTNESS CONCAVENESSES CONCESSIONARY CONDENSATIONS CONFESSIONALS
CONFESSIONARY CONFISCATIONS CONGENIALNESS CONGRESSIONAL CONGRESSWOMAN
CONJUGATENESS CONNASCENCIES CONNATENESSES CONNUBIALISMS CONSECRATIONS
CONSECTANEOUS CONSENTANEOUS CONSERVANCIES CONSERVATIONS CONSIDERANCES
CONSIGNATIONS CONSOCIATIONS CONSPIRATIONS CONSTATATIONS CONSTIPATIONS
CONSULTANCIES CONSULTATIONS CONSUMMATIONS CONTAGIONISTS CONTAINERISES
CONTAINERLESS CONTESTATIONS CONTINUALNESS CONTRABASSOON CONVALESCENTS
CONVERSANCIES CONVERSATIONS COUNTERSTAINS CROSSBANDINGS CUTINISATIONS
CYNICALNESSES DANGEROUSNESS DARLINGNESSES DAUNTLESSNESS DECONGESTANTS
DEFIANTNESSES DEGRADINGNESS DEIONISATIONS DEMANDINGNESS DEMONISATIONS
DESALINATIONS DISANNULLINGS DISANNULMENTS DISCANDERINGS DISCIPLINANTS
DISCRIMINANTS DISENCHANTERS DISGARNISHING DISINFECTANTS DISINFESTANTS
DISINFLATIONS DISORGANISING DISPENSATIONS DISSEMINATING DISSEMINATION
DISTANTNESSES DISTRAINMENTS DIVINISATIONS DRACONIANISMS DRINKABLENESS
DUNNIEWASSALS DYNAMOGENESES DYNAMOGENESIS EARNESTNESSES EASYGOINGNESS
EMBRACINGNESS ENCHANTRESSES ENCOMPASSMENT ENCRUSTATIONS ENDEARINGNESS
ENDONUCLEASES ENDURABLENESS ENERGISATIONS ENFRANCHISERS ENGRAINEDNESS
ENJOYABLENESS ENSWATHEMENTS ENTEROKINASES ENVISAGEMENTS ESSENTIALNESS
ESTRANGEDNESS ESTRANGEMENTS ETERNALNESSES ETERNISATIONS EXPANSIONISMS
EXPANSIONISTS EXPANSIVENESS EXSANGUINATES EXSANGUINEOUS FANATICALNESS
FAWNINGNESSES FEMINISATIONS FENESTRATIONS FINABLENESSES FINALISATIONS
FINANCIALISTS FINICALNESSES FLAUNTINESSES FORTUNATENESS FRANCISATIONS
FRANGIBLENESS FRANKINCENSES FRANTICNESSES GAINFULNESSES GALLANTNESSES
GANGSTERLANDS GENERALNESSES GERMANENESSES GLARINGNESSES GORMANDISINGS
GRANDIOSENESS GRANDSTANDERS GRANTSMANSHIP GREENWASHINGS HALTINGNESSES
HAPPENSTANCES HARDSTANDINGS HAUSSMANNISED HAUSSMANNISES HAUSSMANNIZED
HAUSSMANNIZES HEATHENNESSES HISPANICISING HOMINISATIONS HONORABLENESS
HUMANISATIONS HUNTSMANSHIPS HYDRASTININES HYPNOANALYSES HYPNOANALYSIS
IDENTICALNESS IMAGINARINESS IMMUNISATIONS INABSTINENCES INANIMATENESS
INAUDIBLENESS INCALESCENCES INCANDESCENTS INCAPABLENESS INCENDIARISMS
INCESSANTNESS INCOGNISANCES INCONSONANCES INCONSTANCIES INCRASSATIONS
INCRUSTATIONS INCUNABULISTS INCURABLENESS INDISPENSABLE INDISPENSABLY
INEFFABLENESS INERRABLENESS INEXACTNESSES INFLATIONISMS INFLATIONISTS
INGRAINEDNESS INHUMANNESSES INITIALNESSES INOBSERVANCES INOSCULATIONS
INSALIVATIONS INSANITATIONS INSATIATENESS INSEMINATIONS INSENSATENESS
INSPISSATIONS INSTALLATIONS INSTANTANEOUS INSTANTNESSES INSTAURATIONS
INSTILLATIONS INSTRUMENTALS INSUBSTANTIAL INSUFFLATIONS INTERSTATIONS
INTRANSIGENTS INTRANSITIVES INTRICATENESS INTROGRESSANT INVALIDNESSES
INVIOLATENESS ISOPRENALINES KNAVISHNESSES LANGUIDNESSES LANGUISHMENTS
LASTINGNESSES LATINISATIONS LEARNEDNESSES MADDENINGNESS MANNISHNESSES
MANSPLAININGS MANSPREADINGS MASCULINENESS MASCULINISING MAUDLINNESSES
MEANINGLESSLY MELANISATIONS MELANOGENESES MELANOGENESIS MENSTRUATIONS
MERCENARINESS MINIMISATIONS MINISTRATIONS MISALIGNMENTS MISDEMEANANTS
MISDIAGNOSING MISINFORMANTS MISSHAPENNESS MISUNDERSTAND MOMENTARINESS
MONETISATIONS MOUNTAINSIDES MUNDANENESSES NARCOANALYSES NARCOANALYSIS
NARCOHYPNOSES NARCOHYPNOSIS NASALISATIONS NASALIZATIONS NASOPHARYNGES
NASOPHARYNXES NATIONALISERS NATURALNESSES NAUGHTINESSES NAVIGABLENESS
NEBULISATIONS NECESSARINESS NECESSITARIAN NECESSITATING NECESSITATION
NEFARIOUSNESS NEONOMIANISMS NEURASTHENIAS NEURASTHENICS NEUTRALNESSES
NEWFANGLENESS NEWSMAGAZINES NIGGARDLINESS NOMADISATIONS NONADMISSIONS
NONAESTHETICS NONAGGRESSION NONAGGRESSIVE NONASSOCIATED NONBROADCASTS
NONCLASSIFIED NONCLASSROOMS NONCONSENSUAL NONESSENTIALS NONINSURANCES
NONPASSERINES NONPHOSPHATES NONPHYSICIANS NONRANDOMNESS NONRESISTANCE
NONRESISTANTS NONSECTARIANS NONSENSICALLY NONSINUSOIDAL NONSOCIALISTS
NONSPECIALIST NONSYSTEMATIC NONUNIVERSALS NORMATIVENESS NOTABLENESSES
NOTARISATIONS NOVELISATIONS OBSTINATENESS OFFHANDEDNESS ONOMASTICIANS
OPSONISATIONS OPSONIZATIONS ORGANISATIONS ORGANOGENESES ORGANOGENESIS
OUTPASSIONING PAGANISATIONS PAINFULNESSES PAINTERLINESS PALINGENESIAS
PALINGENESIES PALINGENESIST PARASCENDINGS PARKINSONIANS PARKINSONISMS
PAUNCHINESSES PENALISATIONS PERMANENTNESS PERSONALISING PHENARSAZINES
PHONASTHENIAS PINHEADEDNESS PIQUANTNESSES PLAINTIVENESS PLASTINATIONS
PLASTOCYANINS POLLYANNAISMS PRESENTATIONS PREVALENTNESS PRINCIPALNESS
PRINTABLENESS PROFANENESSES PRUSSIANISING PRUSSIANIZING QUANTISATIONS
RANCOROUSNESS RAUNCHINESSES REASSIGNMENTS RECOGNISANCES REINSTALMENTS
REMONSTRANCES REPRESENTANTS RESPONDENTIAS RESUPINATIONS RETRANSFUSING
REVEALINGNESS ROMANISATIONS SAINTLINESSES SALAMANDRIANS SALINISATIONS
SALINIZATIONS SANCTIMONIOUS SANCTUARISING SANDBLASTINGS SANDPAINTINGS
SANDPAPERINGS SANITARIANISM SANITATIONIST SANITISATIONS SANITIZATIONS
SATANICALNESS SATANOPHANIES SATURNINITIES SCAVENGERINGS SCENARISATION
SCINTILLISCAN SCINTISCANNER SCRAPEPENNIES SCRAWNINESSES SCRIMSHANKING
SEARCHINGNESS SECONDARINESS SEDENTARINESS SEGMENTATIONS SEMICONSONANT
SENARMONTITES SENSATIONALLY SENSATIONISMS SENSATIONISTS SENSATIONLESS
SENSITISATION SENSITIZATION SENSORINEURAL SENSUALNESSES SEXAGENARIANS
SIGNALISATION SIGNIFICANCES SINGULARISING SKRIMSHANKING SLOGANEERINGS
SNAKISHNESSES SNAPSHOOTINGS SNOWBOARDINGS SOLEMNISATION SOLONISATIONS
SOLONIZATIONS SOMNAMBULANTS SOMNIFACIENTS SPARINGNESSES SPINDLESHANKS
SPLENISATIONS SPLENIZATIONS SPONTANEITIES SPONTANEOUSLY STAINLESSNESS
STANDARDISING STATEMENTINGS STAUNCHNESSES STERNUTATIONS STONEWALLINGS
STRANGENESSES STRANGLEMENTS STRAPHANGINGS STREAMLININGS STRONTIANITES
STROPHANTHINS SUBALTERNANTS SUBLINEATIONS SUBTERRANEANS SUBURBANISING
SULPHONATIONS SUPERANNUATES SUSTENTATIONS SYNTACTICIANS TECHNICALNESS
TENABLENESSES TENACIOUSNESS TENTATIVENESS TETANISATIONS THANKLESSNESS
THANKSGIVINGS THINKABLENESS THIOSINAMINES TRANSAMINASES TRANSCENDENTS
TRANSDUCTANTS TRANSDUCTIONS TRANSFECTIONS TRANSFERENCES TRANSFORMINGS
TRANSFUSIONAL TRANSGRESSING TRANSGRESSION TRANSHIPMENTS TRANSHIPPINGS
TRANSHUMANCES TRANSIENTNESS TRANSILIENCES TRANSISTHMIAN TRANSITIONALS
TRANSLUCENCES TRANSMIGRANTS TRANSMISSIONS TRANSMONTANES TRANSPARENCES
TRANSPERSONAL TRANSPLANTERS TRANSPORTINGS TRANSPOSITION TRANSSHIPMENT
TRANSSHIPPING TRANSUDATIONS TRANSUMPTIONS TRANSVERSIONS TUNABLENESSES
TYRANNOSAURUS TYRANNOUSNESS UNADVISEDNESS UNAMIABLENESS UNANIMOUSNESS
UNASHAMEDNESS UNAWARENESSES UNBIASSEDNESS UNCANNINESSES UNCEASINGNESS
UNCERTAINNESS UNCLEANLINESS UNCLEANNESSES UNCLEARNESSES UNCONSECRATES
UNCONSTRAINTS UNCREATEDNESS UNDAUNTEDNESS UNDERCLASSMAN UNDERCLASSMEN
UNDERPASSIONS UNDERSEALINGS UNDERSTANDERS UNEARTHLINESS UNEATABLENESS
UNESSENTIALLY UNFAILINGNESS UNGUARDEDNESS UNHANDINESSES UNHAPPINESSES
UNHEALTHINESS UNIMPASSIONED UNIONISATIONS UNITARIANISMS UNIVERSALNESS
UNLEARNEDNESS UNMANLINESSES UNMEANINGNESS UNMUSICALNESS UNNATURALISES
UNNATURALNESS UNNECESSARILY UNOBSERVANCES UNREADINESSES UNSAINTLINESS
UNSATURATIONS UNSAVOURINESS UNSENSATIONAL UNSENSUALISED UNSENSUALISES
UNSENSUALIZED UNSENSUALIZES UNSHAPELINESS UNSHARPNESSES UNSPARINGNESS
UNSTAIDNESSES UNSUBSTANTIAL UNSUSTAINABLE UNSUSTAINABLY UNTACTFULNESS
UNTAINTEDNESS UNTAMABLENESS UNTAMEDNESSES UNTENABLENESS UNTRESPASSING
UNTUNABLENESS UNUSUALNESSES UNWEARIEDNESS UNWOMANLINESS URBANISATIONS
VAGRANTNESSES VALIANTNESSES VANQUISHMENTS VENERABLENESS VISIONARINESS
VOLUNTARINESS WAINSCOTTINGS WASHINGTONIAS WITHDRAWNNESS WOMANLINESSES
XENODIAGNOSES XENODIAGNOSIS