There are 1189 nine-letter words containing A, D, S and T, https://www.bestwordlist.com/c/a/4/9letterwordswithadst.htm
ABDICANTS ABDICATES ABDUCTEES ABDUCTORS ABRADANTS ABSTAINED ABSTERGED
ABSURDEST ABSURDIST ABSURDITY ACADEMIST ACCIDENTS ACCOASTED ACCREDITS
ACETAMIDS ACIDITIES ACRODONTS ACTINIDES ACTINOIDS ACTIVISED ADAMSITES
ADAPTIONS ADDITIONS ADDITIVES ADDUCTORS ADEPTNESS ADHERENTS ADIPOSITY
ADJACENTS ADJUSTERS ADJUSTING ADJUSTIVE ADJUSTORS ADJUTAGES ADJUTANTS
ADJUVANTS ADMITTEES ADMITTERS ADNASCENT ADNATIONS ADOPTIONS ADOPTIOUS
ADROITEST ADSCRIPTS ADSORBATE ADSORBENT ADULATORS ADULTNESS ADULTRESS
ADVERSEST ADVERSITY ADVERTISE ADVOCAATS ADVOCATES AERODARTS AERODUCTS
ALBITISED ALTITUDES AMADAVATS AMNESTIED AMORTISED ANDESITES ANDESITIC
ANDESYTES ANECDOTES ANTECEDES ANTEDATES ANTHERIDS ANTICISED ANTIDOTES
ANTIDUNES ANTINODES ANTIPODES APHETISED APPETISED APTITUDES AQUEDUCTS
ARIDITIES ASAFETIDA ASCENDANT ASCENDENT ASCIDIATE ASPERATED ASPHALTED
ASPIRATED ASSAULTED ASSIDUITY ASSONATED ASSUETUDE ASTATIDES ASTEROIDS
ASTOUNDED ASTRADDLE ASTRICTED ASTRINGED ASTRODOME ASYNDETIC ASYNDETON
ATHETISED ATMOLYSED ATTENDEES ATTENDERS ATTICISED ATTITUDES ATTRISTED
AUDITINGS AUDITIONS AUDITIVES AUDITRESS AUNTHOODS AUTACOIDS AUTOCADES
AUTOCOIDS AUTODIALS AUTODYNES AUTOLOADS AUTOLYSED AUTOPSIED AUTOSAVED
AVADAVATS AVIDITIES BACKDATES BADMOUTHS BALDPATES BALLADIST BALLASTED
BANDELETS BANDITTIS BANDMATES BANDOBAST BANDOBUST BANDSTAND BANDSTERS
BANDURIST BASSETTED BASTARDLY BASTARDRY BASTINADE BASTINADO BASTIONED
BEADBLAST BEARDIEST BEASTHOOD BEATDOWNS BEDPLATES BEDSTANDS BEDSTEADS
BEDSTRAWS BESAINTED BESTAINED BESTARRED BESTEADED BETHESDAS BIDENTALS
BIRDBATHS BIRTHDAYS BLASTOIDS BLOWDARTS BOATLOADS BOATYARDS BOLTHEADS
BOMBASTED BOOKSTAND BOTANISED BREADIEST BREADNUTS BREASTFED BROADCAST
BUTSUDANS BUTTHEADS BYSTANDER CABSTANDS CADASTERS CADASTRAL CADASTRES
CADETSHIP CANDIDEST CARTLOADS CARTROADS CARYATIDS CASEMATED CASKSTAND
CASTRATED CATALYSED CATENOIDS CATFISHED CATHEDRAS CEDARIEST CERATODUS
CHASTENED CHASTISED CHORDATES CLADISTIC CLODPATES COALDUSTS COASTLAND
COASTWARD COATDRESS COATSTAND COATTENDS CONSTATED COSTARRED COSTEANED
CREASOTED CRISPATED CRISTATED CROUSTADE CRUSTATED CUSPIDATE CUSTODIAL
CUSTODIAN CYSTIDEAN DABBITIES DACOITIES DACTYLICS DACTYLIST DADAISTIC
DAINTIEST DAKOITIES DALMATICS DALTONISM DAMEWORTS DAMNDESTS DAMNEDEST
DANCETTES DANEGELTS DANEWORTS DANGLIEST DAPPEREST DARKLIEST DARNDESTS
DARNEDEST DASHLIGHT DASTARDLY DASYMETER DATABANKS DATABASED DATABASES
DATABUSES DATACARDS DATACOMMS DATAGRAMS DATALLERS DATEBOOKS DATEDNESS
DATELINES DATOLITES DATURINES DAUGHTERS DAUNTLESS DAWSONITE DAYLIGHTS
DAYTALERS DEADBEATS DEADBOLTS DEADLIEST DEADLIFTS DEADSTOCK DEAERATES
DEATHBEDS DEATHCUPS DEATHIEST DEATHLESS DEATHSMAN DEATHSMEN DEBATINGS
DEBUTANTS DECADENTS DECANTERS DECASTERE DECASTICH DECASTYLE DECIMATES
DECORATES DECRETALS DECUSSATE DEDICANTS DEDICATES DEFEATERS DEFEATISM
DEFEATIST DEFECATES DEFLATERS DEFLATORS DEGUSTATE DEISTICAL DELATIONS
DELEGATES DELIBATES DELICATES DEMARKETS DEMASTING DEMENTIAS DEMITASSE
DEMOCRATS DENATURES DENIALIST DENOTATES DENTALISE DENTARIAS DENTARIES
DENUDATES DEPARTEDS DEPARTEES DEPARTERS DEPASTURE DEPILATES DEPURANTS
DEPURATES DERATINGS DERATIONS DERIVATES DEROGATES DESALTERS DESALTING
DESCANTED DESCANTER DESECRATE DESICCANT DESICCATE DESIGNATE DESKFASTS
DESOLATED DESOLATER DESOLATES DESOLATOR DESPERATE DESPOTATE DESPOTATS
DESPUMATE DESSYATIN DESTAINED DESTINATE DESTREAMS DESYATINS DETACHERS
DETAILERS DETAINEES DETAINERS DETANGLES DETASSELS DETONATES DETRAQUES
DEVASTATE DEVIATORS DIABETICS DIABOLIST DIACETYLS DIACTINES DIALLISTS
DIALOGIST DIALYSATE DIAMANTES DIAMETERS DIAPENTES DIARISTIC DIASTASES
DIASTASIC DIASTASIS DIASTATIC DIASTEMAS DIASTOLES DIASTOLIC DIASTYLES
DIATHESES DIATHESIS DIATOMIST DIATREMES DIATRIBES DIAZOTISE DICASTERY
DICENTRAS DICTATORS DIDACTICS DIDACTYLS DIELYTRAS DIETARIES DIFFRACTS
DIGAMISTS DIGASTRIC DIGESTANT DIGITALIS DILATANTS DILATIONS DIOPTASES
DIPLOMATS DIPTERANS DIRTBALLS DISABLIST DISAFFECT DISANOINT DISASTERS
DISATTIRE DISATTUNE DISCANTED DISCANTER DISENTAIL DISHABITS DISHWATER
DISJASKIT DISLOCATE DISMALEST DISMALITY DISMANTLE DISMASTED DISNATURE
DISPARATE DISPARITY DISPARTED DISPLANTS DISPUTANT DISRATING DISSEATED
DISSIPATE DISSONANT DISTAINED DISTANCED DISTANCES DISTANTLY DISTASTED
DISTASTES DISTICHAL DISTRACTS DISTRAILS DISTRAINS DISTRAINT DISTRAITE
DISULFATE DITTANIES DIVAGATES DIVALENTS DOGMATICS DOGMATISE DOGMATISM
DOGMATIST DOGSTAILS DOMINANTS DOMINATES DONATIONS DONATISMS DONATIVES
DOTATIONS DOVETAILS DOWNBEATS DOWNCASTS DOWNRATES DOWNSTAGE DOWNSTAIR
DOWNSTATE DOXASTICS DRABBIEST DRABETTES DRAFFIEST DRAFTIEST DRAFTINGS
DRAFTSMAN DRAFTSMEN DRAGGIEST DRAGONETS DRAGSTERS DRAGSTRIP DRAMATICS
DRAMATISE DRAMATIST DRAWLIEST DRAWTUBES DREAMIEST DREARIEST DRIFTAGES
DRUMBEATS DRYASDUST DRYSALTER DUALISTIC DUALITIES DUATHLONS DUBITATES
DUCATOONS DUCKTAILS DUMPCARTS DURATIONS DURATIVES DUSTBALLS DUSTCARTS
DUSTCOATS DUSTHEAPS DYNAMISTS DYNAMITES DYNASTIES DYNATRONS DYSCRATIC
DYSTAXIAS DYSTHESIA DYSTHYMIA DYSTOCIAL DYSTOCIAS DYSTONIAS DYSTOPIAN
DYSTOPIAS EASTBOUND EASTLANDS EASTWARDS ECDYSIAST ECSTASIED EDACITIES
EDEMATOSE EDEMATOUS EDENTATES EDUCATORS ELATERIDS ELEVATEDS EMENDATES
ENDOBLAST ENDOCASTS ENDOSTEAL ENDPLATES ENSTAMPED ENSWATHED ERADIATES
ERGATOIDS ESCALATED ESCHEATED ESTACADES ESTIMATED ESTIVATED ESTRADIOL
ESTRANGED ESTRAPADE ESTREATED EUPATRIDS EXHAUSTED FALDETTAS FALDSTOOL
FANTASIED FARMSTEAD FASCIATED FEDERATES FELDSPATH FEUDALIST FIDELISTA
FIRSTHAND FLATBRODS FLATHEADS FLATLANDS FOLDBOATS FOREDATES FORWASTED
FRAUDSTER GADABOUTS GASTROPOD GATEFOLDS GILTHEADS GLADLIEST GLADSTONE
GOADSTERS GOATHERDS GOATWEEDS GRADIENTS GRADUATES GUARDANTS HABITUDES
HAGADISTS HAGGADIST HALLSTAND HANDCARTS HANDFASTS HANDKNITS HANDLISTS
HANDSIEST HANDSTAFF HANDSTAMP HANDSTAND HANDSTURN HARDBOOTS HARDPARTS
HARDSTAND HARDTACKS HARDTAILS HARVESTED HATGUARDS HATSTANDS HEADFASTS
HEADFIRST HEADGATES HEADHUNTS HEADNOTES HEADRESTS HEADSHOTS HEADSTALL
HEADSTAND HEADSTAYS HEADSTICK HEADSTOCK HEADSTONE HEAPSTEAD HEARTSEED
HEPATISED HERALDIST HESITATED HINDCASTS HOLDFASTS HOMESTAND HOMESTEAD
HYDRANTHS HYDRASTIS HYDRATORS HYDROCAST HYDROSTAT IDEALISTS IDEATIONS
IDIOBLAST IDOLATERS IDOLATORS IMPASTOED INDAGATES INDICANTS INDICATES
INDURATES INDUSIATE INHAUSTED INKSTANDS INSOLATED INSTALLED INSTANCED
INSTARRED INSULATED INSWATHED INTERDASH INTIFADAS INUNDATES IODATIONS
IODINATES ISODONTAL JAGDWURST JAGGEDEST JEHADISTS JIHADISTS JOLTHEADS
KICKSTAND KIDSTAKES KNOTHEADS KREASOTED LACERTIDS LAIDLIEST LAMBASTED
LAMPADIST LAMPSTAND LANDDROST LANDSLEIT LAPIDATES LAPIDISTS LASSITUDE
LATERISED LATEWOODS LATINISED LATITUDES LAUDATORS LEADWORTS LEFTWARDS
LOADSTARS LOADSTONE LODESTARS LOTUSLAND LUSTIHEAD LUSTRATED MAISTERED
MALEDICTS MANDATORS MASTERDOM MASTHEADS MASTODONS MASTODONT MASTOIDAL
MATADORAS MATADORES MEATHEADS MEDALISTS MEDALLIST MEDIATISE MEDIATORS
MEDICANTS MEDICATES MEDITATES METADATAS METALISED METEWANDS METEYARDS
METHADONS MIDRASHOT MIDSTREAM MIDWATERS MISADAPTS MISADJUST MISATONED
MISDATING MISPARTED MISSEATED MISSTATED MISTRACED MOBCASTED MODALISTS
MODERATES MODERATOS MODULATES MUNDANEST MUSCADETS MUSTACHED MYRIADTHS
NAUSEATED NEATHERDS NEMATODES NEWSSTAND NEWSTRADE NIDATIONS NODATIONS
NONADULTS NONSTEADY NOTARISED NOTECARDS NUDATIONS OBDURATES ODONATIST
ODONTOMAS ORDINANTS ORDINATES ORIBATIDS OSCITATED OSCULATED OSTRACODE
OSTRACODS OUTBOARDS OUTCASTED OUTDANCES OUTDREAMS OUTFASTED OUTGASSED
OUTGUARDS OUTLASHED OUTLASTED OUTPASSED OUTRAISED OUTSAILED OUTSHAMED
OUTSKATED OUTSOARED OUTSPREAD OUTSTANDS OUTSTARED OUTSTATED OUTSTAYED
OUTTASKED OUTTRADES OUTWASTED OVERSTAND PAEDERAST PAGODITES PALLIDEST
PANTDRESS PARODISTS PAROTIDES PAROTOIDS PASTEDOWN PATINISED PEATLANDS
PEDANTISE PEDANTISM PEDERASTS PEDERASTY PEDESTALS PEPTIDASE PINTADOES
PLACIDEST PLASTERED PLATBANDS PLAYDATES PODCASTED PODCASTER PORTLANDS
POSTCARDS POSTDATED POSTDATES POSTGRADS POTSHARDS PRACTISED PREADAPTS
PREADJUST PREADMITS PREADOPTS PREADULTS PREAUDITS PREDATISM PREDATORS
PREDEATHS PREDRAFTS PREPASTED PRETASTED PTYALISED QUADRANTS QUADRATES
QUADRATUS QUANTISED RADIATORS RADICATES RADWASTES RAGGEDEST RAINDATES
RANCIDEST RATICIDES READDICTS READJUSTS REDACTORS REDBREAST REDEFEATS
REDSTARTS REDSTREAK REDUCTASE REDWATERS RESALUTED RESINATED RESONATED
RESTABLED RESTACKED RESTAFFED RESTAMPED RESTARTED RETARDERS RETHREADS
RIBALDEST RICKSTAND RINGSTAND ROADSTEAD ROADSTERS ROSTRATED SABOTAGED
SACREDEST SAGINATED SAINTDOMS SAINTHOOD SALIVATED SALTANDOS SAMIZDATS
SANDBLAST SANDSPITS SANDSPOUT SANDSTONE SANDSTORM SANDWORTS SANITATED
SANITISED SANITIZED SAPONATED SARODISTS SATCHELED SATEDNESS SATINPODS
SATINWOOD SATIRISED SATIRIZED SATISFIED SATURATED SATURNIID SAUNTERED
SAWDUSTED SCAREDEST SCARLETED SCATTERED SCRATCHED SCRATTLED SEALIFTED
SEASTRAND SEDATIONS SEDATIVES SEDENTARY SEEDEATER SEMANTIDE SEMINATED
SEPARATED SERENATED SERVANTED SHATTERED SHETLANDS SHIRTBAND SHITFACED
SHITHEADS SHITLOADS SHORTHAND SHORTHEAD SIBILATED SIDEMEATS SIDEPATHS
SIDERATED SIDERATES SIDETABLE SIDETRACK SILICATED SIMULATED SKETCHPAD
SLATHERED SLATTERED SMARTENED SMARTWEED SMATTERED SODALISTS SODALITES
SOFTHEADS SOLIDATED SOLIDATES SOMNIATED SONICATED SOOTHSAID SOREDIATE
SOUTHLAND SOUTHSAID SOUTHWARD SPADEFEET SPADEFOOT SPATTERED SPECIATED
SPECTATED SPEEDBOAT SPERMATID SPLATCHED SPOLIATED SPRATTLED SPREATHED
SQUATTLED STACKYARD STAGEHAND STAGEHEAD STAGGARDS STAGGERED STAGHOUND
STAGNATED STAIDNESS STAIRHEAD STAMINODE STAMINODY STAMINOID STAMMERED
STAMPEDED STAMPEDER STAMPEDES STAMPEDOS STANDARDS STANDAWAY STANDDOWN
STANDFAST STANDGALE STANDINGS STANDOFFS STANDOUTS STANDOVER STANDPIPE
STAPEDIAL STAPEDIUS STARBOARD STARDRIFT STARDUSTS STARGAZED STARKENED
STASIDION STATEHOOD STATESIDE STATEWIDE STATIONED STAUNCHED STAVUDINE
STEADFAST STEADIERS STEADIEST STEADINGS STEADYING STEALTHED STEAMERED
STEELHEAD STEELYARD STELLATED STEMHEADS STEPDAMES STERADIAN STERNWARD
STEROIDAL STEWARDED STEWARDRY STICCADOS STICHIDIA STINKARDS STOCCADOS
STOCKADED STOCKADES STOCKYARD STOMACHED STOMODAEA STOMODEAL STONEHAND
STOPBANDS STORECARD STORIATED STRADDLED STRADDLER STRADDLES STRADIOTS
STRAGGLED STRANDERS STRANDING STRANGLED STRAPPADO STRAVAGED STREAMBED
STUDFARMS STUPRATED SUBADULTS SUBTRADES SUDATIONS SUDATORIA SUFFLATED
SULPHATED SUNBATHED SUNTANNED SUPERATED SUPINATED SUSTAINED SWARDIEST
SWATTERED SWEATBAND SWEATERED SWORDTAIL SYNDACTYL SYNDICATE TABERDARS
TABLESIDE TACHINIDS TAGBOARDS TAHSILDAR TAILSKIDS TAILSLIDE TAILWINDS
TAKEDOWNS TALMUDISM TALUKDARS TAMANDUAS TAMARINDS TANALISED TANDOORIS
TAPADERAS TAPADEROS TAPENADES TAPIROIDS TARDINESS TARNISHED TARSIOIDS
TARSIPEDS TASSELLED TAWDRIEST TAYASSUID TEABOARDS TEABREADS TEAKWOODS
TEARDOWNS TEARDROPS TEASELLED TEHSILDAR TENDANCES TETANISED TETRACIDS
TETRAPODS THANADARS THANEDOMS THERAPSID THIAZIDES THINCLADS THIRDSMAN
THOUSANDS THRALDOMS THREADERS THRIDACES TIDELANDS TIDEMARKS TIDEWAVES
TIDIVATES TIGHTWADS TIGRIDIAS TILTYARDS TIMECARDS TOADGRASS TOADSTONE
TOADSTOOL TOADYINGS TOADYISMS TOOLHEADS TOREADORS TORNADOES TOTALISED
TOUCHPADS TOWNLANDS TRACHEIDS TRACKBEDS TRACKPADS TRACKSIDE TRADELESS
TRADEOFFS TRADESMAN TRADESMEN TRADITORS TRADUCERS TRAGEDIES TRAILSIDE
TRAMROADS TRANSCEND TRANSCODE TRANSDUCE TRANSFARD TRANSITED TRANSOMED
TRANSUDED TRANSUDES TRANSUMED TRAPDOORS TRAVERSED TREADINGS TREADLERS
TREADLESS TREASURED TRIADISMS TRIADISTS TRIBADIES TRIBADISM TRIDACNAS
TSADDIKIM TSADDIQIM TWADDLERS TZEDAKAHS ULTRAREDS UNDERACTS UNDERCAST
UNDEREATS UNDULATES UNROASTED UNSAINTED UNSALUTED UNSCATHED UNSTACKED
UNSTAINED UNSTALKED UNSTAMPED UNSTARRED UNSWATHED UNTHREADS UNWAISTED
UPSTARTED USTULATED USUCAPTED VALIDATES VANADATES VARTABEDS VASTIDITY
VASTITUDE VATICIDES VEDUTISTA VENDETTAS VESICATED VIEWDATAS VITALISED
VODCASTED VODCASTER VOUTSAFED WADDLIEST WADSETTED WADSETTER WAISTBAND
WARDMOTES WARTWEEDS WASHSTAND WASTELAND WATCHDOGS WATERBEDS WATERDOGS
WATERSHED WATERSIDE WEBCASTED WESTWARDS WIDTHWAYS WINDBLAST WITHDRAWS
WITHSTAND WIZARDEST WOODCHATS WRISTBAND YARDSTICK YESTERDAY