There are 552 eleven-letter words containing A, H and 2T, https://www.bestwordlist.com/c/a/4/11letterwordswithahtt.htm
ACOLOUTHITE AESTHETICAL AFTERBIRTHS AFTERGROWTH AFTERSHAFTS AGONOTHETES
ALIGHTMENTS ALLOPATHIST ALMIGHTIEST ALPHATESTED ALTAZIMUTHS ALTOGETHERS
AMETHYSTINE ANAESTHETIC ANCHORETTES ANCHOVETTAS ANESTHETICS ANESTHETISE
ANESTHETIST ANESTHETIZE ANGLETWITCH ANORTHOSITE ANTHERSMUTS ANTHOLOGIST
ANTHOTAXIES ANTHRACITES ANTHRACITIC ANTICATHODE ANTICHRISTS ANTIHUNTERS
ANTIHUNTING ANTIPATHIES ANTIPATHIST ANTISTROPHE ANTITARNISH ANTITHALIAN
ANTITHEISMS ANTITHEISTS ANTITHYROID ANTITYPHOID APARTHOTELS APATHETICAL
ARCHITECTED ARCHONTATES ARITHMETICS ARTHRECTOMY ARTHRITIDES ARTHRITISES
ARTHROPATHY ASPHALTITES ASSYTHMENTS ASTAXANTHIN ASTHMATICAL ATHEISTICAL
ATHLETICISM ATHWARTSHIP ATTACHMENTS ATTOPHYSICS AUTARCHISTS AUTHENTICAL
AUTHORCRAFT AUTHORITIES AUTOCHTHONS AUTOCHTHONY AUTOTHEISMS AUTOTHEISTS
AUTOTROPHIC BACKCHATTED BACKSTRETCH BATHMITSVAH BATHMITZVAH BATHOLITHIC
BATHOMETERS BATHOMETRIC BATHYLITHIC BATHYMETERS BATHYMETRIC BATMITZVAHS
BATTLESHIPS BLUETHROATS BODHISATTVA BOTHERATION BRATTISHING BRUSCHETTAS
BUTTERHEADS CANTHITISES CARTWRIGHTS CATAPHRACTS CATASTROPHE CATCHWATERS
CATCHWEIGHT CATECHETICS CATECHISTIC CATHARTICAL CATHEDRATIC CATHETERISE
CATHETERISM CATHETERIZE CATHOLICATE CATHOLICITY CATTISHNESS CHAETOGNATH
CHAINSTITCH CHANSONETTE CHASTENMENT CHATTERIEST CHATTERINGS CHEMOTACTIC
CHIASTOLITE CHITCHATTED CHITTAGONGS CHLOANTHITE CHOLESTATIC CHREMATISTS
CHROMATISTS CITHARISTIC COHABITANTS COHORTATIVE CONTRAHENTS CRYPTARITHM
CYTOPATHIES DECATHLETES DEHORTATION DEHORTATIVE DEHORTATORY DEMETHYLATE
DETACHMENTS DETHATCHERS DETHATCHING DIMETHOATES DITCHWATERS DITHIONATES
DITTOGRAPHY DRAUGHTIEST DYSPATHETIC EARTHLIGHTS ENCHANTMENT ENTEROPATHY
ENTHRALMENT ENTHUSIASTS EPITAPHISTS EPITHETICAL ERYTHEMATIC ERYTHORBATE
ESCHEATMENT ESTHETICIAN ETHAMBUTOLS ETHEREALITY ETHNOBOTANY ETHYLATIONS
EUTHANATISE EUTHANATIZE EXANTHEMATA EXHORTATION EXHORTATIVE EXHORTATORY
FAITHWORTHY FARTHERMOST FATHERLIEST FATHOMETERS FEATHERIEST FIANCHETTOS
FOOTBREADTH FRATCHETIER GAMETOPHYTE GASTROLITHS GASTROTRICH GLUTATHIONE
GLYPTOTHECA GNATCATCHER GNATHOSTOME GROATSWORTH HABILITATED HABILITATES
HABILITATOR HABITATIONS HABITUATING HABITUATION HACKBUTTERS HACKTIVISTS
HAEMATOCRIT HAEMATOMATA HAEMOSTATIC HAIRCUTTERS HAIRCUTTING HAIRSTYLIST
HAMFATTERED HANDWRITTEN HAPTOTROPIC HARTEBEESTS HARVESTTIME HATCHETIEST
HATCHETTITE HAUSTELLATE HEARTHSTONE HEARTSTRING HEARTTHROBS HEARTWATERS
HEATHERIEST HEATSTROKES HEBETATIONS HELIOSTATIC HELIOTACTIC HEMATOBLAST
HEMATOCRITS HEMOSTATICS HEPATECTOMY HEPATITIDES HEPATITISES HEPATOCYTES
HEPATOTOXIC HEPTAMETERS HEPTARCHIST HEPTASTICHS HEPTATHLETE HEPTATHLONS
HEPTAVALENT HERETICATED HERETICATES HESITATIONS HETAERISTIC HETAIRISTIC
HETEROATOMS HETEROGRAFT HETEROTAXES HETEROTAXIA HETEROTAXIC HETEROTAXIS
HETEROTOPIA HEXAMETRIST HIPPIATRIST HISTOBLASTS HISTORIATED HOMEOSTATIC
HORTATIVELY HORTATORILY HOSPITALIST HOSPITALITY HUMECTATING HUMECTATION
HUMIDISTATS HYDROSTATIC HYDROTACTIC HYLOPATHIST HYPERSTATIC HYPOSTATISE
HYPOSTATIZE HYPOTHECATE INAUTHENTIC INHABITANTS INTRATHECAL INTRENCHANT
KATABOTHRON KATAVOTHRON KHITMUTGARS KOTAHITANGA LATCHSTRING LATTERMATHS
LEATHERETTE LEATHERIEST LETHALITIES LETTERHEADS LITHOCLASTS LITHOSTATIC
MAILSHOTTED MARTINETISH MATCHSTICKS MATHEMATICS MATHEMATISE MATHEMATIZE
MENTHOLATED METAETHICAL METALSMITHS METAPHORIST METAPHRASTS METATHERIAN
METATHESISE METATHESIZE METHANATION METHYLATING METHYLATION METHYLATORS
MITHRADATIC MITHRIDATES MITHRIDATIC MOTHERCRAFT MULTIAUTHOR MUTTONHEADS
NATUROPATHS NATUROPATHY NIGHTSTANDS NONATHLETES NONATHLETIC NONATTACHED
NORTHEASTER NOTAPHILIST NYCTANTHOUS OCTAHEDRITE OCTASTICHON OPHTHALMIST
ORCHESTRATE ORTHOBORATE ORTHODONTIA ORTHOGNATHY ORTHOPTERAN ORTHOSTATIC
OSTEOPATHIC OUTBREATHED OUTBREATHES OUTCATCHING OUTCHEATING OUTMATCHING
OUTTHANKING OUTWATCHING OVERTHWARTS PANENTHEIST PANTHEISTIC PANTOTHENIC
PARACHUTIST PARENTHETIC PARESTHETIC PATHOLOGIST PENTASTICHS PENTATHLETE
PENTATHLONS PENTATHLUMS PERISTALITH PETAHERTZES PHANTASIAST PHANTASMATA
PHANTASTICS PHANTOMATIC PHILATELIST PHONOTACTIC PHOTOACTIVE PHOTOBATHIC
PHOTONASTIC PHOTOSTATED PHOTOSTATIC PHOTOTACTIC PHOTOTAXIES PHYSIATRIST
PLANCHETTES PLECTOGNATH POSTHARVEST POSTHEATING POTLATCHING PROTOPATHIC
REATTACHING RETINOPATHY RHOTACISTIC RUBYTHROATS SCATTERSHOT SCHEMATISTS
SCRATCHIEST SHANTYTOWNS SHATTERIEST SHIRTTAILED SHIRTWAISTS SHMALTZIEST
SMARTMOUTHS SMITHCRAFTS SMOOTHPATES SNAPSHOTTED SOFTHEARTED SOOTHFASTLY
SOUTHEASTER SPAGHETTIFY SPAGHETTINI SPATTERDASH STADTHOLDER STAPHYLITIS
STARLIGHTED STATEHOUSES STATOLITHIC STEALTHIEST STEALTHINGS STEATORRHEA
STENOBATHIC STEPFATHERS STEPHANITES STEPHANOTIS STITCHCRAFT STOMACHIEST
STOPWATCHES STRAICHTEST STRAIGHTENS STRAIGHTEST STRAIGHTING STRAIGHTISH
STRAIGHTWAY STRATHSPEYS STRAUCHTEST STRAUCHTING STRAUGHTEST STRAUGHTING
STRAWWEIGHT STRETCHABLE STRINGHALTS SWEATSHIRTS SWEETHEARTS SYMPATHETIC
SYNANTHETIC SYNTHETASES SYNTHETICAL TABLECLOTHS TACHEOMETER TACHEOMETRY
TACHOMETERS TACHOMETRIC TACHYMETERS TACHYMETRIC TAPHONOMIST TATPURUSHAS
TAUTOCHRONE TAUTOPHONIC TECHNOCRATS TECTIBRANCH TELEHEALTHS TELEPATHIES
TELEPATHING TELEPATHISE TELEPATHIST TELEPATHIZE TELESTHESIA TENANTSHIPS
TERAHERTZES TETHERBALLS TETRABRACHS TETRACHORDS TETRADRACHM TETRAETHYLS
TETRAHEDRAL TETRAHEDRON TETRAHYMENA TETRAMETHYL TETRARCHATE TETRARCHIES
TETRASTICHS TETRATHEISM TETRATHLONS THALICTRUMS THALLOPHYTE THANATOLOGY
THANATOPSES THANATOPSIS THANKWORTHY THAUMASITES THAUMATROPE THAUMATURGE
THAUMATURGY THEANTHROPY THEATERGOER THEATERLAND THEATREGOER THEATRELAND
THEATRICALS THEATRICISE THEATRICISM THEATRICIZE THEMATISING THEMATIZING
THENARDITES THEOLOGATES THEOMACHIST THEOPATHIES THEOREMATIC THEORETICAL
THERAPEUTIC THEREABOUTS THEREWITHAL THERIOLATRY THERMONASTY THERMOSTATS
THERMOTAXES THERMOTAXIC THERMOTAXIS THERMOTICAL THERSITICAL THIGMOTAXES
THIGMOTAXIS THIOCYANATE THIOPENTALS THIOSULFATE THIRDSTREAM THITHERWARD
THORACOTOMY THORIANITES THOUGHTCAST THOUGHTWAYS THOUSANDTHS THREATENERS
THREATENING THREEPEATED THRENETICAL THROATINESS THROATLATCH THROATWORTS
THUMBSTALLS THUMBTACKED THWARTINGLY THWARTSHIPS TITANOTHERE TOOTHPASTES
TOOTHWASHES TRACHEOTOMY TRACHITISES TRAGACANTHS TRAITORHOOD TRAITORSHIP
TRANSHUMANT TRAPSHOOTER TREACHETOUR TRENCHANTLY TRIATHLETES TRICHROMATS
TRIHYDRATED TRIHYDRATES TRITHIONATE TROCHANTERS TROPHOBLAST TROPHOTAXES
TROPHOTAXIS TRUANTSHIPS TRUEHEARTED TRYPTOPHANE TRYPTOPHANS TURBOSHAFTS
TURTLEHEADS UINTATHERES ULTRABRIGHT ULTRAHEATED ULTRALIGHTS ULTRARIGHTS
ULTRASMOOTH UNAESTHETIC UNAUTHENTIC UNCATCHIEST UNTHATCHING WAISTCLOTHS
WATCHSTRAPS WATCHTOWERS WATERTHRUSH WEATHERCAST WEATHERMOST WEBCHATTING
WHITETHROAT WHITEWATERS WHITLEATHER WITCHCRAFTS WITHSTANDER XANTHATIONS