There are 610 fifteen-letter words containing A, E, H, I and S, https://www.bestwordlist.com/c/a/5/15letterwordswithaehis.htm ACCOMPLISHMENTS ACHROMATICITIES ACROPARESTHESIA ACTINOCHEMISTRY ACTINOTHERAPIES ADENOHYPOPHYSIS ADIATHERMANCIES AEROLITHOLOGIES AFFRANCHISEMENT AIRWORTHINESSES ALCOHOLOMETRIES ALEXIPHARMAKONS ALLELOMORPHISMS ALPHABETISATION ALUMINOTHERMIES AMINOPHENAZONES AMPHIDIPLOIDIES ANAESTHESIOLOGY ANAESTHETICALLY ANESTHETISATION ANESTHETIZATION ANTHROPOGENESIS ANTHROPOLATRIES ANTHROPOMETRIES ANTHROPOMETRIST ANTHROPOPATHIES ANTHROPOPHAGIES ANTHROPOSOPHIES ANTICHOLESTEROL ANTIDIARRHOEALS ANTIFASHIONABLE ANTIHELMINTHICS APHELIOTROPISMS APOPHTHEGMATISE APOPHTHEGMATIST APOTHEGMATISING APPRENTICEHOODS APPRENTICESHIPS ARACHNOIDITISES ARCHAEOBOTANIES ARCHAEOBOTANIST ARCHAEOMETRISTS ARCHAEZOOLOGIES ARCHEOBOTANISTS ARCHEOMAGNETISM ARCHEOZOOLOGIES ARCHEOZOOLOGIST ARCHGENETHLIACS ARCHIDIACONATES ARCHIEPISCOPACY ARCHIEPISCOPATE ARCHPRIESTHOODS ARCHPRIESTSHIPS AROMATHERAPISTS ARTERIOGRAPHIES ATHEROSCLEROSIS ATHEROSCLEROTIC ATMOSPHERICALLY AUTHENTICATIONS AUTOBIOGRAPHERS AUTOBIOGRAPHIES AUTOSCHEDIASTIC AUTOSCHEDIAZING AZIDOTHYMIDINES BACTERIOPHAGIES BACTERIOPHAGOUS BALNEOTHERAPIES BIBLIOTHECARIES BIBLIOTHERAPIES BIGHEADEDNESSES BIOGEOCHEMICALS BISPHOSPHONATES BLAMEWORTHINESS BRACHIOSAURUSES BRACHISTOCHRONE BRACHYCEPHALICS BRACHYCEPHALIES BRACHYCEPHALISM BRACHYDACTYLIES BRACHYTHERAPIES BRAUNSCHWEIGERS BREATHABILITIES BREATHARIANISMS BRONCHOGRAPHIES CANTHAXANTHINES CATECHISTICALLY CATECHUMENSHIPS CATHETERISATION CATHODOGRAPHIES CERVICOGRAPHIES CHAMBERLAINSHIP CHANCELLORSHIPS CHANGEABILITIES CHANNELISATIONS CHANNELIZATIONS CHANNELOPATHIES CHARACTERISABLE CHARACTERISTICS CHARGEABILITIES CHEMICOPHYSICAL CHEMOPSYCHIATRY CHEMOTAXONOMIES CHEMOTAXONOMIST CHEMOTHERAPISTS CHENOPODIACEOUS CHLOROTHIAZIDES CHLORPROMAZINES CHLORPROPAMIDES CHLORTHALIDONES CHOLESTEROLEMIA CHOLESTYRAMINES CHOLINESTERASES CHRESTOMATHICAL CHROMATICNESSES CHROMOTHERAPIES CHRONOTHERAPIES CLIMATOGRAPHIES COMPUTERPHOBIAS CONSERVATORSHIP COUNTERSHADINGS CRASHWORTHINESS CRYPTAESTHESIAS CYBERCHONDRIACS CYPROHEPTADINES CYTOPATHOLOGIES DACTYLOGRAPHIES DECHLORINATIONS DECHRISTIANISED DECHRISTIANISES DECHRISTIANIZED DECHRISTIANIZES DEHUMANISATIONS DEHUMANIZATIONS DEHYPNOTISATION DEPHLOGISTICATE DERMATOGLYPHICS DERMATOGRAPHIAS DERMATOGRAPHIES DERMATOPHYTOSIS DESULPHURATIONS DETACHABILITIES DEXAMPHETAMINES DIAHELIOTROPISM DIAPHOTOTROPIES DIAPHRAGMITISES DICHLOROETHANES DIMENHYDRINATES DISACCHARIDASES DISENCHANTINGLY DISENCHANTMENTS DISENFRANCHISED DISENFRANCHISES DISENTHRALLMENT DISENTHRALMENTS DISESTABLISHING DISHEARTENINGLY DISHEARTENMENTS DISINHERITANCES DISTINGUISHABLE DOLICHOSAURUSES DORSIBRANCHIATE EARTHSHATTERING ECHINODERMATOUS ECHOCARDIOGRAMS ECTOMYCORRHIZAS EDRIOPHTHALMOUS ELECTROGRAPHIES ELEUTHEROMANIAS ENANTIOMORPHIES ENANTIOMORPHISM ENANTIOMORPHOUS ENCEPHALITOGENS ENCEPHALOTOMIES ENFRANCHISEMENT ENHYPOSTATISING ENHYPOSTATIZING ENTEROHEPATITIS ENTHRONISATIONS ENTHRONIZATIONS EPITHELIALISING EPITHELIOMATOUS EPITHELISATIONS EPITHELIZATIONS ESOPHAGOSCOPIES ETHEREALISATION ETHERIFICATIONS ETHNOHISTORIANS ETHNOHISTORICAL EUPHEMISTICALLY EUTROPHICATIONS FAITHLESSNESSES FAITHWORTHINESS FASHIONABLENESS FEATHERBEDDINGS FEATHERSTITCHED FEATHERSTITCHES FETISHISTICALLY FOOLHARDINESSES GENETHLIALOGIES GEODEMOGRAPHICS GEOSTROPHICALLY GRAPHICALNESSES HABITABLENESSES HAEMAGGLUTININS HALLUCINOGENICS HAMAMELIDACEOUS HEADMASTERLIEST HEADMASTERSHIPS HEADMISTRESSIER HEARTSICKNESSES HEMAGGLUTINATES HEMICRYSTALLINE HEMOCHROMATOSIS HEMOGLOBINURIAS HENDECASYLLABIC HEPARINISATIONS HEPARINIZATIONS HEPATICOLOGISTS HEREDITARIANISM HEREDITARIANIST HERESIOGRAPHERS HERESIOGRAPHIES HERESTHETICIANS HERMAPHRODITISM HERNIORRHAPHIES HETEROSCEDASTIC HETEROSEXUALITY HETEROSOCIALITY HETEROTHALLISMS HEXOSAMINIDASES HIBERNICISATION HIERACOSPHINGES HIERACOSPHINXES HIEROGRAMMATIST HILARIOUSNESSES HISTOCHEMICALLY HISTOCOMPATIBLE HISTORIOGRAPHER HOLOCRYSTALLINE HOLOMETABOLISMS HOMOGENISATIONS HOMOGENIZATIONS HOMOSEXUALITIES HOMOSOCIALITIES HONOURABILITIES HORIZONTALITIES HYDROCORALLINES HYDROGENISATION HYDROTHERAPISTS HYDROXYAPATITES HYPERACTIVITIES HYPERADRENALISM HYPERAESTHESIAS HYPERAGGRESSIVE HYPERCALCAEMIAS HYPERCATABOLISM HYPERFASTIDIOUS HYPERGLYCAEMIAS HYPERINFLATIONS HYPERLIPIDEMIAS HYPERMETABOLISM HYPERNATRAEMIAS HYPERPARASITISM HYPERPHYSICALLY HYPERPOLARISING HYPERSALINITIES HYPERSALIVATION HYPERSTIMULATED HYPERSTIMULATES HYPERURICAEMIAS HYPERVENTILATES HYPERVIGILANCES HYPNOTHERAPISTS HYPOCHONDRIASES HYPOCRYSTALLINE HYPOMAGNESAEMIA HYPOMAGNESEMIAS HYPSOMETRICALLY ICHTHYOSAURUSES ICOSITETRAHEDRA IMMUNOTHERAPIES IMPERISHABILITY INAPPREHENSIBLE INAPPREHENSIONS INHARMONICITIES INHERITABLENESS INHOSPITALITIES INTERBEHAVIOURS INTERSCHOLASTIC IONOSPHERICALLY ISOTHIOCYANATES KINDHEARTEDNESS KINESITHERAPIES KINESTHETICALLY LABYRINTHITISES LEGISLATORSHIPS LEUCOCYTHAEMIAS LEXICOGRAPHISTS LICENTIATESHIPS LIEUTENANTSHIPS LIGHTFASTNESSES LIONHEARTEDNESS LISSENCEPHALIES LISSENCEPHALOUS LYMPHADENITISES MACHINABILITIES MACRENCEPHALIAS MACRENCEPHALIES MAGISTRATESHIPS MARSHMALLOWIEST MASSOTHERAPISTS MATHEMATICISING MATHEMATISATION MECHANISTICALLY MECHANOMORPHISM MEGALOCEPHALIES MESATICEPHALIES MESATICEPHALOUS METABISULPHITES METACHROMATISMS METALLOGRAPHIES METALLOGRAPHIST METAMATHEMATICS METAPHYSICISING METAPHYSICIZING METHAEMOGLOBINS METHYLXANTHINES MICROAEROPHILES MISAPPREHENDING MISAPPREHENSION MISAPPREHENSIVE MISCHARACTERISE MISCHARACTERIZE MISSHAPENNESSES MONOSACCHARIDES MULTICHARACTERS MULTITHREADINGS MUSICOTHERAPIES NEARSIGHTEDNESS NEOARSPHENAMINE NEUROPSYCHIATRY NIGHTMARISHNESS NONACHIEVEMENTS NONHOSPITALISED NONHOSPITALIZED NONHYSTERICALLY NONPSYCHOACTIVE NONTHEISTICALLY NORTHEASTERLIES NUDIBRANCHIATES OLIGOCYTHAEMIAS OLIGOSACCHARIDE OPHTHALMOLOGIES OPISTHOGRAPHIES ORCHESOGRAPHIES ORCHESTRATIONAL ORGANOCHLORINES ORGANOTHERAPIES ORTHOGONALITIES OSCILLOGRAPHIES OSTEOARTHRITICS OSTEOPATHICALLY OVEREMPHASISING OVEREMPHASIZING OVERENTHUSIASMS OVERHASTINESSES OXYHAEMOGLOBINS PACHYMENINGITIS PALAEOGRAPHISTS PAMPHLETEERINGS PANTHEISTICALLY PARASYMPATHETIC PARTHENOCARPIES PARTHENOGENESIS PATHOGENICITIES PEDAGOGUISHNESS PERIHEPATITISES PERIPHERALITIES PERISHABILITIES PHALLOCENTRISMS PHANTASMAGORIES PHANTASMALITIES PHARISAICALNESS PHARMACEUTICALS PHARMACOGNOSIES PHARMACOPOEIANS PHARMACOPOEISTS PHARYNGOSCOPIES PHENAKISTOSCOPE PHENETHYLAMINES PHENOBARBITONES PHENOMENALISING PHENOMENALISTIC PHENOMENALITIES PHENYLTHIOUREAS PHILOSOPHASTERS PHONEMICISATION PHONETICISATION PHOSPHOCREATINE PHOSPHOCREATINS PHOSPHORYLATIVE PHOTODISSOCIATE PHOTODUPLICATES PHOTOELASTICITY PHOTOENGRAVINGS PHRASEMONGERING PHRASEOGRAPHIES PHTHALOCYANINES PHYLLOSILICATES PHYSICOCHEMICAL PHYSIOTHERAPIES PHYSIOTHERAPIST PIGHEADEDNESSES PINHEADEDNESSES PITHECANTHROPUS PLAGIOCEPHALIES PLAINCLOTHESMAN PLAINCLOTHESMEN POLYARTHRITIDES POLYARTHRITISES POLYSACCHARIDES POLYSYNTHETICAL POSTHEMORRHAGIC POSTMASTERSHIPS PRAISEWORTHIEST PREANAESTHETICS PREESTABLISHING PREHISTORICALLY PROBATIONERSHIP PROSOPOGRAPHIES PROTOSPATHAIRES PSEPHOLOGICALLY PSEUDAESTHESIAS PSEUDEPIGRAPHIC PSEUDEPIGRAPHON PSEUDOARTHROSIS PSYCHEDELICALLY PSYCHOCHEMICALS PSYCHODELICALLY PSYCHOGENETICAL PSYCHOGENICALLY PSYCHOGERIATRIC PSYCHOMETRICIAN PSYCHOSEXUALITY PSYCHOTHERAPIES PSYCHOTHERAPIST PSYCHROMETRICAL PTERYLOGRAPHIES PUNISHABILITIES PYRETOTHERAPIES PYROTECHNICIANS RADICULOPATHIES RADIOTELEGRAPHS RADIOTELEPHONES RADIOTHERAPISTS REAUTHORISATION REESTABLISHMENT REHABILITATIONS REHOSPITALISING REHOSPITALIZING REHUMANIZATIONS REORCHESTRATING REORCHESTRATION RETHEORIZATIONS RHEUMATOLOGISTS RHINENCEPHALONS RHINOSCLEROMATA RHYPAROGRAPHIES RIGHTABLENESSES SACCHARIMETRIES SACCHAROMETRIES SCAPHOCEPHALICS SCAPHOCEPHALIES SCAPHOCEPHALISM SCEUOPHYLACIUMS SCHEMATISATIONS SCHEMATIZATIONS SCHILLERISATION SCHILLERIZATION SCHISTOSOMIASES SCHIZOAFFECTIVE SCHOLARLINESSES SCHOOLMASTERING SCHOOLMASTERISH SCHOOLTEACHINGS SCLEROTHERAPIES SCRATCHBUILDERS SCRIMSHANDERING SEARCHABILITIES SEARCHINGNESSES SEAWORTHINESSES SEISMOGRAPHICAL SELENOGRAPHICAL SELENOGRAPHISTS SEMILOGARITHMIC SEMIPORNOGRAPHY SERVOMECHANICAL SERVOMECHANISMS SHERARDISATIONS SHERARDIZATIONS SHILLYSHALLIERS SHOCKUMENTARIES SKETCHABILITIES SLEDGEHAMMERING SOPHISTICATEDLY SOUTHEASTERLIES SPECTROGRAPHIES SPEECHIFICATION SPELEOTHERAPIES SPHAEROSIDERITE SPHERICALNESSES SPHEROIDISATION SPHEROIDIZATION SPHYGMOGRAPHIES SPINTHARISCOPES SPIROCHAETAEMIA SPLANCHNOLOGIES SPORANGIOPHORES SQUEAMISHNESSES STADHOLDERSHIPS STADTHOLDERSHIP STANDOFFISHNESS STEEPLECHASINGS STEGANOGRAPHIES STEGANOGRAPHIST STEGOCEPHALIANS STEREOGRAPHICAL STOECHIOLOGICAL STRAIGHTJACKETS STRATOSPHERICAL STREPHOSYMBOLIA SULFAMETHAZINES SULPHACETAMIDES SULPHANILAMIDES SULPHATHIAZOLES SULPHINPYRAZONE SUPERCARGOSHIPS SUPERHUMANISING SUPERHUMANITIES SUPERHUMANIZING SYLLABOGRAPHIES SYMBOLOGRAPHIES SYMMETROPHOBIAS SYMPATHECTOMIES SYMPATHETICALLY SYMPATHOMIMETIC SYNECDOCHICALLY SYNTHESISATIONS SYNTHESIZATIONS SYNTHETISATIONS SYNTHETIZATIONS TECHNICALNESSES TELAUTOGRAPHIES TETARTOHEDRISMS THALASSOCRACIES THALATTOCRACIES THANATOGRAPHIES THANKWORTHINESS THAUMATOLATRIES THEATRICALISING THEATRICALITIES THEOLOGISATIONS THEOLOGIZATIONS THEOSOPHISTICAL THERIANTHROPISM THERMAESTHESIAS THERMALISATIONS THERMALIZATIONS THERMOSTABILITY THERMOTHERAPIES THICKHEADEDNESS THINKABLENESSES THORACOCENTESIS THORACOPLASTIES THREMMATOLOGIES TRAINSPOTTERISH TRICHOMONACIDES TRIHALOMETHANES TRIIODOMETHANES TRIMETHYLAMINES TRIPHENYLAMINES TRISOCTAHEDRONS UNANAESTHETISED UNANAESTHETIZED UNAPPREHENSIBLE UNCHRISTIANISED UNCHRISTIANISES UNCHRISTIANIZED UNCHRISTIANIZES UNCHRISTIANLIKE UNDEREMPHASISED UNDEREMPHASISES UNDEREMPHASIZED UNDEREMPHASIZES UNEARTHLINESSES UNHEALTHINESSES UNSEAWORTHINESS UNSHAPELINESSES UNSOPHISTICATED UNTHINKABLENESS VAPOURISHNESSES WAPPENSCHAWINGS WEATHERISATIONS WEATHERIZATIONS WEATHERLINESSES WHIMSICALNESSES WHIPPERSNAPPERS WITHDRAWNNESSES ZINJANTHROPUSES ZYGOBRANCHIATES