There are 706 thirteen-letter words containing A, D and 2S, https://www.bestwordlist.com/c/a/4/13letterwordswithadss.htm ACCORDIONISTS ACIDOPHILUSES ADAPTABLENESS ADAPTEDNESSES ADDICTIVENESS ADMINISTRANTS ADMINISTRATES ADMIRABLENESS ADMISSIBILITY ADMONISHMENTS ADVENTURESSES ADVERBIALISES ADVERSARINESS ADVERSENESSES ADVISABLENESS ADVISEDNESSES AECIDIOSPORES AEROSIDERITES AESTHETICISED ALDERMANSHIPS ALDOLISATIONS ALDOSTERONISM AMBASSADORIAL ANAESTHETISED ANAPHRODISIAS ANDROSPHINGES ANDROSPHINXES ANDROSTERONES ANECDOTALISMS ANECDOTALISTS ANTISPASMODIC APFELSTRUDELS APOSTROPHISED ARCHDUCHESSES ARDUOUSNESSES ARFVEDSONITES ASHAMEDNESSES ASSIDUOUSNESS ASSUREDNESSES ASTRODYNAMICS ATTITUDINISES AUDACIOUSNESS AUDIBLENESSES AUDIOCASSETTE AUDIOMETRISTS AUTODESTRUCTS AUTOSCHEDIASM AUTOSUGGESTED AVOIRDUPOISES AWKWARDNESSES BACKSWORDSMAN BACKSWORDSMEN BACKWOODSIEST BALDERLOCKSES BAREFACEDNESS BASIDIOSPORES BATTLEDRESSES BEARDEDNESSES BEARDLESSNESS BELATEDNESSES BIGHEADEDNESS BLANDISHMENTS BLOATEDNESSES BOARDSAILINGS BODDHISATTVAS BODYSNATCHERS BRADYKINESIAS BRASSFOUNDERS BRASSFOUNDING BREASTFEEDERS BROADCASTINGS CADDISHNESSES CARBOHYDRASES CARDINALSHIPS CARDIOLOGISTS CARDSHARPINGS CHONDROBLASTS CHONDROSTIANS COADJUTRESSES COADMINISTERS COCCIDIOSTATS COMPACTEDNESS COMRADELINESS CONDENSATIONS CONQUISTADORS CONSERVATISED CONSIDERABLES CONSIDERANCES CONSOLIDATORS CORDIALNESSES CRABBEDNESSES CRAGGEDNESSES CROSSBANDINGS CUSTODIANSHIP CYCLODIALYSES CYCLODIALYSIS CYCLOPAEDISTS CYTODIAGNOSES CYTODIAGNOSIS DAMPISHNESSES DANGEROUSNESS DARLINGNESSES DARMSTADTIUMS DASTARDLINESS DASTARDNESSES DAUNTLESSNESS DEACCESSIONED DEASPIRATIONS DEATHLESSNESS DEATHLINESSES DEBASEDNESSES DEBAUCHEDNESS DECALESCENCES DECAPITALISES DECARBONISERS DECASUALISING DECASYLLABICS DECASYLLABLES DECENTRALISES DECENTRALISTS DECLASSIFYING DECOMPENSATES DECONGESTANTS DECONSECRATES DECRASSIFYING DECRUSTATIONS DEERSTALKINGS DEFENESTRATES DEFIANTNESSES DEFLATIONISTS DEGRADINGNESS DEIONISATIONS DELICATESSENS DEMAGNETISERS DEMANDINGNESS DEMILITARISES DEMINERALISES DEMOCRATISERS DEMOGRAPHISTS DEMONETARISES DEMONISATIONS DEMONSTRATORS DENATURALISES DENUCLEARISES DEPERSONALISE DEPOSITATIONS DEPUTISATIONS DERMABRASIONS DESACRALISING DESALINATIONS DESATURATIONS DESERTISATION DESEXUALISING DESIDERATIONS DESIDERATIVES DESIRABLENESS DESPERATENESS DESPOLIATIONS DESQUAMATIONS DESTABILISERS DESTABILISING DESTABILIZERS DESTIGMATIZES DESULPHURATES DETRACTRESSES DEUTEROPLASMS DEVIATIONISMS DEVIATIONISTS DIALECTICISMS DIAMAGNETISMS DIASTEREOMERS DIASTROPHISMS DICHROMATISMS DICTATORSHIPS DIESELISATION DIGITISATIONS DIGRESSIONARY DILATABLENESS DILETTANTISMS DIMERISATIONS DISACCHARIDES DISACCUSTOMED DISADVANTAGES DISADVENTURES DISAFFECTIONS DISAFFILIATES DISAFFORESTED DISAGGREGATES DISAGREEABLES DISAGREEMENTS DISALLOWANCES DISAMBIGUATES DISANNULLINGS DISANNULMENTS DISASSEMBLERS DISASSEMBLIES DISASSEMBLING DISASSIMILATE DISASSOCIATED DISASSOCIATES DISAUTHORISED DISAUTHORISES DISAUTHORIZES DISCANDERINGS DISCEPTATIONS DISCEPTATIOUS DISCIPLINANTS DISCLAMATIONS DISCOGRAPHERS DISCOGRAPHIES DISCOMEDUSANS DISCORDANCIES DISCORPORATES DISCREPANCIES DISCRIMINANTS DISCRIMINATES DISEMBRANGLES DISENCHANTERS DISESTIMATION DISFRANCHISED DISFRANCHISES DISGARNISHING DISGARRISONED DISGAVELLINGS DISGRADATIONS DISGREGATIONS DISHARMONIOUS DISHARMONISED DISHARMONISES DISHARMONIZES DISINFECTANTS DISINFESTANTS DISINFLATIONS DISINTEGRATES DISINTRICATES DISNATURALISE DISOPERATIONS DISORGANISERS DISORGANISING DISORGANIZERS DISORIENTATES DISPARATENESS DISPASSIONATE DISPAUPERISED DISPAUPERISES DISPAUPERIZES DISPENSATIONS DISPLACEMENTS DISPLEASANCES DISPLEASANTED DISPLEASINGLY DISPLEASURING DISPOSABILITY DISPOSITIONAL DISPRAISINGLY DISPROPRIATES DISQUALIFIERS DISQUANTITIES DISSATISFYING DISSEMBLANCES DISSEMINATING DISSEMINATION DISSEMINATIVE DISSEMINATORS DISSEPIMENTAL DISSERTATIONS DISSEVERANCES DISSEVERATION DISSIMILARITY DISSIMILATING DISSIMILATION DISSIMILATIVE DISSIMILATORY DISSIMULATING DISSIMULATION DISSIMULATIVE DISSIMULATORS DISSOCIALISED DISSOCIALISES DISSOCIALIZED DISSOCIALIZES DISSOCIATIONS DISSYLLABISMS DISTANTNESSES DISTASTEFULLY DISTILLATIONS DISTRAINMENTS DISYLLABIFIES DITHYRAMBISTS DITRANSITIVES DIVINISATIONS DOCTRINARISMS DOLICHOSAURUS DOMESTICATORS DRACONIANISMS DRACUNCULUSES DRAFTSMANSHIP DRAFTSPERSONS DRAMATURGISTS DREADLESSNESS DREAMLESSNESS DRINKABLENESS DUNNIEWASSALS DURABLENESSES DYNAMOGENESES DYNAMOGENESIS DYSAESTHESIAS DYSMENORRHEAS EAVESDROPPERS EDITORIALISES EDITORIALISTS EDUCATIONESES EDUCATIONISTS EGGHEADEDNESS EMBARRASSEDLY ENDEARINGNESS ENDONUCLEASES ENDOPARASITES ENDURABLENESS ENGRAINEDNESS EPANADIPLOSES EPANADIPLOSIS EQUIDISTANCES ESOPHAGITIDES ESSENTIALISED ESSENTIALIZED ESTRANGEDNESS EXALTEDNESSES EXOPEPTIDASES FADDISHNESSES FARADISATIONS FATHEADEDNESS FAVOREDNESSES FELDSPATHOIDS FIDEICOMMISSA FLACCIDNESSES FLASHFORWARDS FLUIDISATIONS FOOLHARDINESS FORESHADOWERS FORWARDNESSES FROWARDNESSES GALACTOSIDASE GANGSTERLANDS GASTEROPODOUS GLADFULNESSES GORMANDISINGS GRADUALNESSES GRADUATESHIPS GRANDIOSENESS GRANDIOSITIES GRANDSTANDERS GUARDEDNESSES GUARDIANSHIPS HADROSAURUSES HAEMODIALYSES HAEMODIALYSIS HAEMOSIDERINS HAGGARDNESSES HAIRDRESSINGS HAIRSBREADTHS HANDSBREADTHS HAPHAZARDNESS HARDSCRABBLES HARDSTANDINGS HAUSSMANNISED HAUSSMANNIZED HAZARDOUSNESS HEADMISTRESSY HEADSHRINKERS HISPANIOLISED HOMESTEADINGS HOMOSCEDASTIC HORSERADISHES HOTHEADEDNESS HOUSEHUSBANDS HYDRARGYRISMS HYDRARTHROSES HYDRARTHROSIS HYDRASTININES HYDROMASSAGES HYDROMEDUSANS HYDROPATHISTS HYDROSOMATOUS HYPOSPADIASES IDEALISATIONS IDENTICALNESS IDIOMATICNESS IDIOTICALNESS IMMEDIATENESS IMPASSIONEDLY INAUDIBLENESS INCANDESCENTS INCENDIARISMS INDISPENSABLE INDISPENSABLY INDISSOCIABLE INDISSOCIABLY INDISSOLVABLE INDISSUADABLE INDISSUADABLY INDUSTRIALISE INDUSTRIALISM INDUSTRIALIST INGRAINEDNESS INTERRADIUSES INTERSTADIALS INVALIDNESSES ISOANTIBODIES KALEIDOSCOPES LABOREDNESSES LADDISHNESSES LAGGARDNESSES LANGUIDNESSES LAPIDESCENCES LEARNEDNESSES LEUCOPLASTIDS LOATHEDNESSES MADDENINGNESS MADEMOISELLES MADERISATIONS MAIDISHNESSES MALADROITNESS MANSPREADINGS MASSARANDUBAS MASSERANDUBAS MASTOIDITIDES MASTOIDITISES MAUDLINNESSES MEDIAEVALISMS MEDIAEVALISTS MEDIATENESSES MEDIATORSHIPS MERCHANDISERS MISADDRESSING MISADJUSTMENT MISADVENTURES MISAPPREHENDS MISCLASSIFIED MISDEMEANANTS MISDEMEANOURS MISDIAGNOSING MISEDUCATIONS MISEMPHASISED MISEMPHASIZED MISPERSUADING MISSIONARISED MISSIONARIZED MISTRANSLATED MISUNDERSTAND MITHRIDATISES MITHRIDATISMS MOUNTAINSIDES MUCKSPREADERS MUNDANENESSES MYOCARDITISES NEMATODIRUSES NEWSPAPERDOMS NIGGARDLINESS NOMADISATIONS NONADMISSIONS NONASSOCIATED NONBROADCASTS NONCLASSIFIED NONRANDOMNESS NONSINUSOIDAL NUCLEOCAPSIDS NUCLEOTIDASES OFFHANDEDNESS OMBUDSMANSHIP ORTHOPAEDISTS OUTWARDNESSES OVERDIAGNOSES OVERDIAGNOSIS OVERIDEALISES OVERPERSUADES PAEDOBAPTISMS PAEDOBAPTISTS PALINDROMISTS PARASCENDINGS PARASITICIDES PARASPHENOIDS PARCHEDNESSES PARENTHESISED PAROTIDITISES PEDESTRIANISE PEDESTRIANISM PERISSODACTYL PHOSPHATIDYLS PIGHEADEDNESS PINHEADEDNESS PLASMODESMATA PLASTERBOARDS PODSOLISATION POSTDILUVIANS POSTDOCTORALS POSTGRADUATES POSTSECONDARY PRASEODYMIUMS PREADMISSIONS PREADMONISHES PREDATORINESS PREDESIGNATES PREDESTINATES PREDIABETESES PROBOSCIDEANS PROBOSCIDIANS PROPAGANDISES PROPAGANDISMS PROPAGANDISTS PSEUDIMAGINES PSEUDOALLELES PSEUDOCARPOUS PSEUDOCLASSIC PSEUDOMARTYRS PSEUDOMONADES PSEUDOSCALARS RADIATIONLESS RADICALNESSES RADIESTHESIAS RADIESTHESIST RADIOCHEMISTS RADIOISOTOPES RADIOPHONISTS READJUSTMENTS READMINISTERS REESTABLISHED REGARDFULNESS RELATEDNESSES RELAXEDNESSES RESPONDENTIAS RHABDOSPHERES RHABDOVIRUSES SACERDOTALISE SACERDOTALISM SACERDOTALIST SADOMASOCHISM SADOMASOCHIST SAILBOARDINGS SALAMANDRIANS SALAMANDROIDS SALICYLAMIDES SANDBLASTINGS SANDPAINTINGS SANDPAPERIEST SANDPAPERINGS SCABBEDNESSES SCLERODERMIAS SCRAPERBOARDS SCRATCHBOARDS SCRATCHBUILDS SCRIEVEBOARDS SCRIMSHANDERS SCRIMSHANDIED SCRIMSHANDIES SECONDARINESS SECTARIANISED SECTIONALISED SEDENTARINESS SEDITIONARIES SEMIARIDITIES SEMIDETACHEDS SEMIDIAMETERS SEMISEDENTARY SERODIAGNOSES SERODIAGNOSIS SHADOWCASTING SHADOWINESSES SHAGGEDNESSES SHAREHOLDINGS SHUFFLEBOARDS SKATEBOARDERS SLAVEHOLDINGS SLEDGEHAMMERS SLOCKDOLAGERS SLUGGARDISING SLUGGARDLIEST SMALLHOLDINGS SNOWBOARDINGS SOLIFIDIANISM SOPHISTICATED SOUTHEASTWARD SOUTHWESTWARD SPASMODICALLY SPATTERDASHES SPEEDBALLINGS SPEEDBOATINGS SPEEDSKATINGS SPERMATOCIDES SPERMATOZOIDS SPINDLESHANKS SPIRITUALISED SQUALIDNESSES STADDLESTONES STAKEHOLDINGS STANDARDBREDS STANDARDISERS STANDARDISING STANDARDIZERS STANDOFFISHLY STANDPATTISMS STEADFASTNESS STEEPLECHASED STEGANOPODOUS STEPDAUGHTERS STERNOMASTOID STICKHANDLERS STIPENDIARIES STRAIGHTBREDS STRAIGHTEDGES STRANGLEHOLDS STRIDULATIONS STUDDINGSAILS SUBACIDNESSES SUBADOLESCENT SUBARACHNOIDS SUBCLASSIFIED SUBDEACONATES SUBDEACONRIES SUBDEACONSHIP SUBDEBUTANTES SUBDIACONATES SUBDIVISIONAL SUBFEUDATIONS SUBINFEUDATES SUBORDINARIES SUBORDINATORS SUBSIDIARIATS SUBSIDISATION SUBSIDIZATION SUBSTANTIATED SULFADIAZINES SULPHADOXINES SULPHONAMIDES SUMMERSAULTED SUPERSEDEASES SUPERSTARDOMS SURFBOARDINGS SWORDSMANSHIP SYCOPHANTISED SYMPTOMATISED SYNADELPHITES SYNDACTYLISMS SYNDICALISTIC THOUSANDFOLDS THREADINESSES TRADESCANTIAS TRADESPEOPLES TRADESPERSONS TRADITIONISTS TRADITIONLESS TRADUCIANISMS TRADUCIANISTS TRANSCENDENTS TRANSDUCTANTS TRANSDUCTIONS TRANSUDATIONS TRYPARSAMIDES UNADVISEDNESS UNASHAMEDNESS UNASSIMILATED UNBIASSEDNESS UNCREATEDNESS UNDAUNTEDNESS UNDERCLASSMAN UNDERCLASSMEN UNDEREMPHASES UNDEREMPHASIS UNDERPASSIONS UNDERSEALINGS UNDERSTANDERS UNDERSTRATUMS UNDERSURFACES UNDISCUSSABLE UNDISGUISABLE UNDISSOCIATED UNEMBARRASSED UNESTABLISHED UNGUARDEDNESS UNHANDINESSES UNIMPASSIONED UNIVERSALISED UNLEARNEDNESS UNPARASITISED UNPASTEURISED UNPLASTICISED UNREADINESSES UNSENSUALISED UNSENSUALIZED UNSPECIALISED UNSTAIDNESSES UNSTEADFASTLY UNSTIGMATISED UNTAINTEDNESS UNTAMEDNESSES UNWEARIEDNESS VASODILATIONS VAUDEVILLISTS VIDEOCASSETTE WAYWARDNESSES WITHDRAWNNESS XENODIAGNOSES XENODIAGNOSIS YIELDABLENESS ZANTEDESCHIAS ZIGZAGGEDNESS