There are 759 eight-letter words containing A, H, S and T, https://www.bestwordlist.com/c/a/4/8letterwordswithahst.htm
ABSINTHE ABSINTHS ABTHANES ACANTHAS ACANTHUS ACHIOTES ACOLYTHS
ACTORISH ADHIBITS AESTHETE AIRSHAFT AIRSHOTS ALCAHEST ALKAHEST
ALTHAEAS ALTHORNS AMETHYST ANETHOLS ANTHEMIS ANTHESES ANTHESIS
ANTHILLS ANTISHIP APATHIES APHETISE APHORIST APHTHOUS APOTHEMS
ARCHAIST ARCHLETS ARETHUSA ARTHOUSE ASHPLANT ASHTANGA ASHTRAYS
ASPHALTS ASTHANGA ASTHENIA ASTHENIC ASTHORES ASTONISH ATAGHANS
ATHANASY ATHANORS ATHEISED ATHEISES ATHEISMS ATHEISTS ATHEIZES
ATHETISE ATHLETAS ATHLETES ATHODYDS ATISHOOS ATTACHES AUTARCHS
AZIMUTHS BACHATAS BAITFISH BARGHEST BASEPATH BASHMENT BASHTAGS
BATCHERS BATHINGS BATHLESS BATHMATS BATHMISM BATHORSE BATHOSES
BATHTUBS BEDBATHS BETHANKS BETHESDA BIATCHES BLATHERS BRACHETS
BRASHEST BRATTISH BREADTHS BREATHES BULLSHAT BUSHGOAT BUSHMEAT
CALATHOS CALATHUS CAMSHAFT CAPTCHAS CATARRHS CATCHERS CATCHUPS
CATECHUS CATHEADS CATHECTS CATHETUS CATHEXES CATHEXIS CATHISMA
CATHODES CATHOLES CATHOODS CATHOUSE CHAMLETS CHANTERS CHANTEYS
CHANTIES CHANTORS CHAPATIS CHAPLETS CHAPTERS CHARACTS CHARIEST
CHARIOTS CHAROSET CHARTERS CHARTISM CHARTIST CHASTELY CHASTENS
CHASTEST CHASTISE CHASTITY CHATBOTS CHATEAUS CHATTELS CHATTERS
CHATTIES CHAYOTES CHEAPEST CHEATERS CHEETAHS CHELATES CHIANTIS
CHIASTIC CHILIAST CHITOSAN CHOCTAWS CHOLATES CHUPATIS CHUTZPAS
CITHARAS CLATCHES CLAUCHTS CLAUGHTS COHABITS CRATCHES CRATHURS
DASHIEST DASHPOTS DESPATCH DETACHES DIANTHUS DISHABIT DISPATCH
DISPATHY DRAUGHTS DUSTHEAP DYSPATHY EARSHOTS EARTHSET ECTHYMAS
EMBATHES ENCHANTS ENSHEATH ENSWATHE ENTHRALS EPITAPHS ERATHEMS
ESCHALOT ESCHEATS ESTHESIA ETCHANTS ETHANALS ETHANOLS ETHICALS
EXCHEATS EXHAUSTS EYEBATHS FAINTISH FAITHERS FANTOOSH FARTHELS
FARTHEST FATHEADS FEATHERS FISHBOAT FISHTAIL FLASHEST FLATFISH
FLATTISH FLATWASH FLAUGHTS FRATCHES FRAUGHTS FUTHARCS FUTHARKS
GAHNITES GASLIGHT GASTHAUS GASTIGHT GATCHERS GAUCHEST GHASTFUL
GHASTING GOATFISH GOLIATHS HABITANS HABITATS HABITUES HACKBUTS
HACKLETS HAFTARAS HAFTAROS HAFTOROS HAGADIST HAGBOLTS HAILIEST
HAILSHOT HAIRCUTS HAIRIEST HAIRNETS HAIRSTED HALAKIST HALBERTS
HALFWITS HALIBUTS HALIMOTS HALIOTIS HALITOUS HALTERES HALTINGS
HALTLESS HAMATSAS HAMMIEST HAMPSTER HAMSTERS HANDFAST HANDIEST
HANDLIST HANDOUTS HANDSETS HANGNEST HANGOUTS HANGTAGS HAPLITES
HAPLONTS HAPPIEST HAPTENES HARDHATS HARDIEST HARDTOPS HARICOTS
HARMOSTS HARMOSTY HAROSETH HAROSETS HARPISTS HARSHEST HARSLETS
HARTBEES HARVESTS HASHIEST HASHTAGS HASTATED HASTEFUL HASTENED
HASTENER HASTIEST HASTINGS HATBANDS HATBOXES HATBRUSH HATCHELS
HATCHERS HATCHETS HATELESS HATRACKS HATSTAND HATTINGS HATTOCKS
HAULOUTS HAUNTERS HAUTBOIS HAUTBOYS HAUTEURS HAVARTIS HAWKBITS
HAYLOFTS HAYSTACK HEADFAST HEADIEST HEADMOST HEADREST HEADSETS
HEADSHOT HEADSTAY HEAPIEST HEARTENS HEARTIES HEATHENS HEATHERS
HEATINGS HEATLESS HEATSPOT HEAVIEST HEAVYSET HECTARES HEELTAPS
HEKTARES HELIASTS HELLCATS HEMATICS HEMATINS HEMOSTAT HEPATICS
HEPATISE HEPTANES HESITANT HESITATE HETAERAS HETAIRAS HIATUSES
HICATEES HINDCAST HISTAMIN HOARIEST HOARSEST HOASTING HOASTMAN
HOASTMEN HOATZINS HOISTMAN HOISTWAY HOLDFAST HOMESTAY HOPTOADS
HOSPITAL HOSPITIA HOSTAGES HOTCAKES HOTHEADS HOUSESAT HUITAINS
HUMANEST HUMANIST HUNTSMAN HURLBATS HUTZPAHS HYALITES HYDATIDS
HYDRANTS HYDRATES HYSTERIA IJTIHADS IMBATHES INEARTHS INHABITS
INHAUSTS INSHEATH INSWATHE INTHRALS ISARITHM ISOBATHS ISOTACHS
ISTHMIAN JACINTHS JEHADIST JIHADIST KASHRUTH KASHRUTS KATHODES
KATHUMPS KETUBAHS KHANATES KHOTBAHS KHUTBAHS KITHARAS KLATCHES
LAIGHEST LATCHETS LATHIEST LATHINGS LATHYRUS LAYSHAFT LEATHERS
LITHATES LOATHERS LOATHEST MACHETES MAHATMAS MAILSHOT MAMMOTHS
MANCHETS MANHUNTS MANIHOTS MANSHIFT MASHIEST MASTABAH MASTHEAD
MASTICHE MASTICHS MATCHERS MATCHETS MATCHUPS MATESHIP MATHESES
MATHESIS MAUTHERS MAWTHERS MEGAHITS METHANES MISFAITH MISMATCH
MISPATCH MISTEACH MITSVAHS MITZVAHS MOSCHATE MOSTWHAT MUDBATHS
MUKHTARS MUSHRATS MUSTACHE NAPHTHAS NAPHTOLS NATHLESS NAUTCHES
NAYTHLES NETHEADS OGHAMIST OPSIMATH OUTFLASH OUTHAULS OUTHEARS
OUTSHAME OXHEARTS PANTHERS PARASHOT PARATHAS PASTICHE PATCHERS
PATHLESS PATHOSES PATHWAYS PEATSHIP PENTHIAS PHABLETS PHAETONS
PHALLIST PHANTASM PHANTAST PHANTASY PHANTOMS PHASEOUT PHATTEST
PHEASANT PHENATES PHONATES PHORATES PHYTANES PISTACHE PITARAHS
PITHEADS PLASHETS PLEASETH POSTHEAT POTASHED POTASHES POTHEADS
POTSHARD POTSHARE PREHEATS PUSHCART QUATCHES RACHITIS RATCHETS
RATHOLES RATHOUSE RECHARTS RECHATES RECHEATS RHEOSTAT RHYTINAS
SABBATHS SABKHATS SACHETED SAINTISH SALTBUSH SALTFISH SAMITHIS
SANGHATS SAPPHIST SATCHELS SAWTEETH SAWTOOTH SCAITHED SCATCHES
SCATHING SCHANTZE SCHEMATA SCHMALTZ SCHMATTE SCRATCHY SCYPHATE
SEECATCH SHADIEST SHAFTERS SHAFTING SHAITANS SHAKEOUT SHAKIEST
SHALIEST SHALLOTS SHANTEYS SHANTIES SHANTIHS SHANTUNG SHARIATS
SHARPEST SHASTERS SHASTRAS SHATOOSH SHATTERS SHATTERY SHEATHED
SHEATHER SHEATHES SHECHITA SHEHITAH SHEHITAS SHEITANS SHERIATS
SHETLAND SHIATSUS SHIATZUS SHIITAKE SHIPMATE SHITAKES SHITBAGS
SHITCANS SHITFACE SHITHEAD SHITLOAD SHITTAHS SHMALTZY SHMATTES
SHOALEST SHOPTALK SHORTAGE SHORTARM SHORTIAS SHOWBOAT SIDEPATH
SIGHTSAW SKAITHED SKYWATCH SLAPSHOT SLATCHES SLATHERS SMARTISH
SMATCHED SMATCHES SNAPSHOT SNATCHED SNATCHER SNATCHES SOFTHEAD
SOMEWHAT SOOTHSAY SOUTACHE SOUTHPAW SOUTHSAY SPARTHES SPATHOSE
SPREATHE STABLISH STAGHORN STAITHES STANCHED STANCHEL STANCHER
STANCHES STANCHLY STANDISH STANHOPE STARCHED STARCHER STARCHES
STARFISH STARSHIP STARTISH STASHIES STASHING STEALTHS STEALTHY
STEMHEAD STENGAHS STEPHANE STHENIAS STICHERA STIRRAHS STOMACHS
STOMACHY STRAICHT STRAIGHT STRAMASH STRAUCHT STRAUGHT STRAWHAT
SUBSHAFT SULPHATE SUNBATHE SUNBATHS SWATCHES SWATHERS SWATHIER
SWATHING SYMPATHY SYNANTHY SYNTHASE TABASHIR TACHISME TACHISMS
TACHISTE TACHISTS TACHYONS TAISCHES TALLITHS TALLYHOS TAMASHAS
TANGHINS TANIWHAS TANKSHIP TAPHOLES TAPHOUSE TARABISH TARBOOSH
TARBOUSH TATAHASH TATHATAS TAUHINUS TAWHIRIS TEACHERS TEAHOUSE
TEASHOPS TEPACHES TERAOHMS TEUCHATS THALAMUS THALLOUS THALWEGS
THANAGES THANATOS THANGKAS THANKERS THANNAHS THATCHES THATNESS
THAWIEST THAWINGS THAWLESS THEATERS THEATRES THENAGES THERIACS
THERIANS THERMALS THESAURI THESPIAN THIAMINS THIAZINS THIAZOLS
THISAWAY THORACES THORAXES THOUSAND THRASHED THRASHER THRASHES
THREAVES THRIMSAS THRUWAYS THRYMSAS THWAITES THYMOMAS TIGHTASS
TOADFISH TOADRUSH TOADYISH TOHEROAS TOHUNGAS TOISEACH TOPARCHS
TOSHACHS TOVARISH TOWHEADS TOWPATHS TRACHEAS TRACHLES TRAHISON
TRAMPISH TRANCHES TRANSHIP TRASHCAN TRASHERS TRASHERY TRASHIER
TRASHILY TRASHING TRASHMAN TRASHMEN TREHALAS TRIARCHS TRIPHASE
TRISHAWS TROCHARS TULCHANS TUSHKARS UNCHASTE UNEARTHS UNEATHES
UNFAITHS UNHEARTS UNSTARCH UNSWATHE URETHANS URETHRAS WARATAHS
WARPATHS WARTHOGS WASHFAST WASHIEST WASHOUTS WASHPOTS WASHTUBS
WATCHERS WATCHETS WATERISH WEATHERS WEBCHATS WHATNESS WHATNOTS
WHATSITS WHEATENS WHIPCATS WHITTAWS WOOLHATS WREATHES XANTHAMS
XANTHANS XANTHINS XANTHISM XANTHOUS YACHTERS YACHTIES ZABTIEHS
ZAITECHS ZAPTIAHS ZAPTIEHS