There are 818 fifteen-letter words containing A, H, I and S, https://www.bestwordlist.com/c/a/4/15letterwordswithahis.htm ACCOMPLISHMENTS ACCOUNTANTSHIPS ACHONDROPLASIAS ACHONDROPLASTIC ACHROMATICITIES ACHROMATISATION ACROPARESTHESIA ACTINOCHEMISTRY ACTINOTHERAPIES ADENOHYPOPHYSIS ADIATHERMANCIES AEROLITHOLOGIES AFFRANCHISEMENT AIRWORTHINESSES ALCOHOLISATIONS ALCOHOLIZATIONS ALCOHOLOMETRIES ALEXIPHARMAKONS ALLELOMORPHISMS ALPHABETISATION ALUMINOTHERMIES AMBASSADORSHIPS AMINOPHENAZONES AMPHIDIPLOIDIES ANAESTHESIOLOGY ANAESTHETICALLY ANARCHISTICALLY ANESTHETISATION ANESTHETIZATION ANNIHILATIONISM ANTAPHRODISIACS ANTHROPOGENESIS ANTHROPOLATRIES ANTHROPOLOGISTS ANTHROPOMETRIES ANTHROPOMETRIST ANTHROPOPATHIES ANTHROPOPATHISM ANTHROPOPHAGIES ANTHROPOPHOBIAS ANTHROPOPHOBICS ANTHROPOPHUISMS ANTHROPOPSYCHIC ANTHROPOSOPHIES ANTHROPOSOPHIST ANTIALCOHOLISMS ANTIAPHRODISIAC ANTIARRHYTHMICS ANTICHOLESTEROL ANTICHRISTIANLY ANTIDIARRHOEALS ANTIFASHIONABLE ANTIHELMINTHICS ANTIHISTAMINICS ANTIMONARCHISTS ANTIPHLOGISTICS ANTISHOPLIFTING ANTISYPHILITICS ANTITHROMBOTICS APHELIOTROPISMS APOPHTHEGMATISE APOPHTHEGMATIST APOTHEGMATISING APPRENTICEHOODS APPRENTICESHIPS ARACHNOIDITISES ARCHAEOBOTANIES ARCHAEOBOTANIST ARCHAEOMETRISTS ARCHAEZOOLOGIES ARCHEOBOTANISTS ARCHEOMAGNETISM ARCHEOZOOLOGIES ARCHEOZOOLOGIST ARCHGENETHLIACS ARCHIDIACONATES ARCHIEPISCOPACY ARCHIEPISCOPATE ARCHPRIESTHOODS ARCHPRIESTSHIPS AROMATHERAPISTS ARTERIOGRAPHIES ASTROPHYSICALLY ASTROPHYSICISTS ATHEROSCLEROSIS ATHEROSCLEROTIC ATMOSPHERICALLY AUTHENTICATIONS AUTOBIOGRAPHERS AUTOBIOGRAPHIES AUTORADIOGRAPHS AUTOSCHEDIASTIC AUTOSCHEDIAZING AZIDOTHYMIDINES BACCHANALIANISM BACKSCRATCHINGS BACTERIOPHAGIES BACTERIOPHAGOUS BALNEOTHERAPIES BATRACHOPHOBIAS BIBLIOTHECARIES BIBLIOTHERAPIES BIGHEADEDNESSES BIOGEOCHEMICALS BIOSTRATIGRAPHY BIPARTISANSHIPS BISPHOSPHONATES BLAMEWORTHINESS BRACHIOSAURUSES BRACHISTOCHRONE BRACHYCEPHALICS BRACHYCEPHALIES BRACHYCEPHALISM BRACHYDACTYLIES BRACHYDACTYLISM BRACHYDIAGONALS BRACHYPINAKOIDS BRACHYTHERAPIES BRAUNSCHWEIGERS BREATHABILITIES BREATHARIANISMS BRONCHODILATORS BRONCHOGRAPHIES BRONCHOSCOPICAL CANTHAXANTHINES CATECHISTICALLY CATECHUMENSHIPS CATHETERISATION CATHODOGRAPHIES CATHOLICISATION CERVICOGRAPHIES CHALCOGRAPHISTS CHAMBERLAINSHIP CHANCELLORSHIPS CHANGEABILITIES CHANNELISATIONS CHANNELIZATIONS CHANNELOPATHIES CHAPTALISATIONS CHAPTALIZATIONS CHARACTERISABLE CHARACTERISTICS CHARGEABILITIES CHEMICOPHYSICAL CHEMOPSYCHIATRY CHEMOTAXONOMIES CHEMOTAXONOMIST CHEMOTHERAPISTS CHENOPODIACEOUS CHLORITISATIONS CHLORITIZATIONS CHLOROTHIAZIDES CHLORPROMAZINES CHLORPROPAMIDES CHLORTHALIDONES CHOLESTEROLEMIA CHOLESTYRAMINES CHOLINESTERASES CHONDRICHTHYANS CHONDROCRANIUMS CHORIOALLANTOIS CHRESTOMATHICAL CHROMATICNESSES CHROMATOLOGISTS CHROMOTHERAPIES CHRONOTHERAPIES CINCHONISATIONS CINCHONIZATIONS CLAUSTROPHILIAS CLAUSTROPHOBIAS CLIMATOGRAPHIES COCHAIRMANSHIPS COMMANDANTSHIPS COMMISSARYSHIPS COMPOTATIONSHIP COMPUTERPHOBIAS CONSERVATORSHIP CONSULTANTSHIPS CORINTHIANISING COUNTERSHADINGS CRASHWORTHINESS CRYPTAESTHESIAS CRYPTOGRAPHISTS CYBERCHONDRIACS CYPROHEPTADINES CYTOPATHOLOGIES CYTOPATHOLOGIST DACTYLOGRAPHIES DECHLORINATIONS DECHRISTIANISED DECHRISTIANISES DECHRISTIANIZED DECHRISTIANIZES DEHUMANISATIONS DEHUMANIZATIONS DEHYPNOTISATION DEPHLOGISTICATE DERMATOGLYPHICS DERMATOGRAPHIAS DERMATOGRAPHIES DERMATOPHYTOSIS DESULPHURATIONS DETACHABILITIES DEXAMPHETAMINES DIAHELIOTROPISM DIAPHOTOTROPIES DIAPHOTOTROPISM DIAPHRAGMATITIS DIAPHRAGMITISES DIASTROPHICALLY DICHLOROETHANES DICHOTOMISATION DICHROMATICISMS DIMENHYDRINATES DISACCHARIDASES DISENCHANTINGLY DISENCHANTMENTS DISENFRANCHISED DISENFRANCHISES DISENTHRALLMENT DISENTHRALMENTS DISESTABLISHING DISHABILITATING DISHABILITATION DISHARMONIOUSLY DISHEARTENINGLY DISHEARTENMENTS DISINHERITANCES DISINTHRALLINGS DISTINGUISHABLE DISTINGUISHABLY DOLICHOSAURUSES DORSIBRANCHIATE DRAUGHTSMANSHIP DYSMORPHOPHOBIA 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 FARTHINGSWORTHS FASHIONABLENESS FEATHERBEDDINGS FEATHERSTITCHED FEATHERSTITCHES FETISHISTICALLY FOOLHARDINESSES GENETHLIALOGIES GEODEMOGRAPHICS GEOSTROPHICALLY GLOSSOGRAPHICAL GRAPHICALNESSES GRAPHITISATIONS GRAPHITIZATIONS HABITABLENESSES HAEMAGGLUTININS HALLUCINOGENICS HAMAMELIDACEOUS HARMONISTICALLY HARPSICHORDISTS 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 HISTOPATHOLOGIC HISTORIOGRAPHER HISTORIOGRAPHIC HOLOBLASTICALLY HOLOCRYSTALLINE HOLOMETABOLISMS HOMOCHROMATISMS HOMOGENISATIONS HOMOGENIZATIONS HOMOPLASTICALLY HOMOSEXUALITIES HOMOSOCIALITIES HONOURABILITIES HORIZONTALITIES HOSPITALISATION HOSPITALIZATION HUMANITARIANISM HUMANITARIANIST HUMIDIFICATIONS HYDROCORALLINES HYDRODYNAMICIST HYDROGENISATION HYDROSTATICALLY HYDROTHERAPISTS HYDROXYAPATITES HYGROSCOPICALLY HYLOZOISTICALLY HYPERACTIVITIES HYPERADRENALISM HYPERAESTHESIAS HYPERAGGRESSIVE HYPERCALCAEMIAS HYPERCATABOLISM HYPERFASTIDIOUS HYPERGLYCAEMIAS HYPERINFLATIONS HYPERLIPIDEMIAS HYPERMETABOLISM HYPERNATRAEMIAS HYPERPARASITISM HYPERPHYSICALLY HYPERPOLARISING HYPERSALINITIES HYPERSALIVATION HYPERSTIMULATED HYPERSTIMULATES HYPERURICAEMIAS HYPERVENTILATES HYPERVIGILANCES HYPNOTHERAPISTS HYPNOTISABILITY HYPOCHONDRIASES HYPOCHONDRIASIS HYPOCHONDRIASMS HYPOCHONDRIASTS HYPOCRYSTALLINE HYPOMAGNESAEMIA HYPOMAGNESEMIAS HYPOPITUITARISM HYPOSTASISATION HYPOSTASIZATION HYPOSTATISATION HYPOSTATIZATION HYPSOMETRICALLY ICHTHYOPHAGISTS ICHTHYOSAURIANS ICHTHYOSAURUSES ICOSITETRAHEDRA IMMUNOTHERAPIES IMPERISHABILITY IMPOSTHUMATIONS INAPPREHENSIBLE INAPPREHENSIONS INHARMONICITIES INHERITABLENESS INHOSPITALITIES INTERBEHAVIOURS INTERSCHOLASTIC IONOSPHERICALLY ISOTHIOCYANATES KINDHEARTEDNESS KINESITHERAPIES KINESTHETICALLY LABYRINTHITISES LABYRINTHODONTS LEGISLATORSHIPS LEUCOCYTHAEMIAS LEXICOGRAPHISTS LICENTIATESHIPS LIEUTENANTSHIPS LIGHTFASTNESSES LIONHEARTEDNESS LISSENCEPHALIES LISSENCEPHALOUS LITHOCHROMATICS LYMPHADENITISES LYMPHANGIOGRAMS LYOPHILISATIONS LYOPHILIZATIONS MACHINABILITIES MACRENCEPHALIAS MACRENCEPHALIES MAGISTRATESHIPS MARSHMALLOWIEST MASOCHISTICALLY MASSOTHERAPISTS MATHEMATICISING MATHEMATISATION MATRIARCHALISMS MECHANISTICALLY MECHANOMORPHISM MEGALOCEPHALIES MESATICEPHALIES MESATICEPHALOUS METABISULPHITES METACHROMATISMS METALLOGRAPHIES METALLOGRAPHIST METAMATHEMATICS METAPHYSICISING METAPHYSICIZING METHAEMOGLOBINS METHYLXANTHINES MICROAEROPHILES MICROBAROGRAPHS MICROPHYSICALLY MISAPPREHENDING MISAPPREHENSION MISAPPREHENSIVE MISCHARACTERISE MISCHARACTERIZE MISSHAPENNESSES MONOCHROMATISMS MONOSACCHARIDES MORPHINOMANIACS MULTICHARACTERS MULTITHREADINGS MUSICOTHERAPIES MYOCARDIOGRAPHS MYTHOLOGISATION NANOPUBLISHINGS NEARSIGHTEDNESS NEOARSPHENAMINE NEUROPSYCHIATRY NIGHTMARISHNESS NONACHIEVEMENTS NONCHARISMATICS NONHISTORICALLY NONHOSPITALISED NONHOSPITALIZED NONHYSTERICALLY NONPARTISANSHIP NONPARTIZANSHIP NONPSYCHIATRIST NONPSYCHOACTIVE NONTHEISTICALLY NORTHEASTERLIES NOTHINGARIANISM NOTWITHSTANDING NUDIBRANCHIATES OLIGOCYTHAEMIAS OLIGOSACCHARIDE OPHTHALMOLOGIES OPHTHALMOLOGIST OPHTHALMOSCOPIC OPISTHOGNATHISM OPISTHOGNATHOUS OPISTHOGRAPHIES ORCHESOGRAPHIES ORCHESTRATIONAL ORGANOCHLORINES ORGANOGRAPHISTS ORGANOTHERAPIES ORTHOCHROMATISM ORTHOGONALISING ORTHOGONALITIES ORTHOPSYCHIATRY OSCILLOGRAPHIES OSTEOARTHRITICS OSTEOPATHICALLY OUTDOORSMANSHIP OVEREMPHASISING OVEREMPHASIZING OVERENTHUSIASMS OVERHASTINESSES OXYHAEMOGLOBINS PACHYMENINGITIS PALAEOGRAPHISTS PAMPHLETEERINGS PANOPHTHALMITIS PANTHEISTICALLY PARASYMPATHETIC PARTHENOCARPIES PARTHENOGENESIS PATHOGENICITIES PATHOPHYSIOLOGY PATRIARCHALISMS PEDAGOGUISHNESS PERIHEPATITISES PERIPHERALITIES PERISHABILITIES PHALLOCENTRISMS PHANTASMAGORIAL PHANTASMAGORIAS PHANTASMAGORIES PHANTASMALITIES PHARISAICALNESS PHARMACEUTICALS PHARMACOGNOSIES PHARMACOGNOSIST PHARMACOGNOSTIC PHARMACOLOGISTS PHARMACOPOEIANS PHARMACOPOEISTS PHARMACOPOLISTS PHARYNGOLOGISTS PHARYNGOSCOPIES PHENAKISTOSCOPE PHENETHYLAMINES PHENOBARBITONES PHENOMENALISING PHENOMENALISTIC PHENOMENALITIES PHENYLTHIOUREAS PHILANTHROPISTS PHILANTHROPOIDS PHILOSOPHASTERS PHILOSOPHICALLY PHLOGISTICATING PHONEMICISATION PHONETICISATION PHOSPHATISATION PHOSPHATIZATION PHOSPHOCREATINE PHOSPHOCREATINS PHOSPHORYLATING PHOSPHORYLATION PHOSPHORYLATIVE PHOTODISSOCIATE PHOTODUPLICATES PHOTOELASTICITY PHOTOENGRAVINGS PHOTOIONISATION PHOTOJOURNALISM PHOTOJOURNALIST PHOTOOXIDATIONS PHOTOTRANSISTOR PHRASEMONGERING PHRASEOGRAPHIES PHTHALOCYANINES PHYLLOSILICATES PHYSICOCHEMICAL PHYSIOGRAPHICAL PHYSIOLOGICALLY PHYSIOPATHOLOGY PHYSIOTHERAPIES PHYSIOTHERAPIST PIGHEADEDNESSES PINHEADEDNESSES PITHECANTHROPUS PLAGIOCEPHALIES PLAINCLOTHESMAN PLAINCLOTHESMEN POLYARTHRITIDES POLYARTHRITISES POLYCHROMATISMS POLYSACCHARIDES POLYSYNTHETICAL POSTHEMORRHAGIC POSTMASTERSHIPS PRAISEWORTHIEST PREANAESTHETICS PREESTABLISHING PREHISTORICALLY PROBATIONERSHIP PROCURATORSHIPS PROSOPOGRAPHIES PROTHONOTARIATS PROTOHISTORIANS PROTOSPATHAIRES PROTOSPATHARIUS PSEPHOLOGICALLY PSEUDAESTHESIAS PSEUDEPIGRAPHIC PSEUDEPIGRAPHON PSEUDOARTHROSIS PSILANTHROPISMS PSILANTHROPISTS PSYCHEDELICALLY PSYCHIATRICALLY PSYCHOACOUSTICS PSYCHOANALYSING PSYCHOANALYZING PSYCHOBIOGRAPHY PSYCHOCHEMICALS PSYCHODELICALLY PSYCHOGENETICAL PSYCHOGENICALLY PSYCHOGERIATRIC PSYCHOGRAPHICAL PSYCHOHISTORIAN PSYCHOLOGICALLY PSYCHOMETRICIAN PSYCHOSEXUALITY PSYCHOTHERAPIES PSYCHOTHERAPIST PSYCHROMETRICAL PTERYLOGRAPHIES PUNISHABILITIES PYRETOTHERAPIES PYROTECHNICIANS RADICULOPATHIES RADIOAUTOGRAPHS RADIOPHOSPHORUS RADIOTELEGRAPHS RADIOTELEPHONES RADIOTHERAPISTS REAUTHORISATION REESTABLISHMENT REHABILITATIONS REHOSPITALISING REHOSPITALIZING REHUMANIZATIONS REORCHESTRATING REORCHESTRATION RETHEORIZATIONS RHEUMATOLOGISTS RHINENCEPHALONS RHINOSCLEROMATA RHYPAROGRAPHIES RIGHTABLENESSES SACCHARIMETRIES SACCHARISATIONS SACCHARIZATIONS SACCHAROMETRIES SADOMASOCHISTIC SAPROPHYTICALLY SCAPHOCEPHALICS SCAPHOCEPHALIES SCAPHOCEPHALISM SCEUOPHYLACIUMS SCHEMATISATIONS SCHEMATIZATIONS SCHILLERISATION SCHILLERIZATION SCHISTOSOMIASES SCHISTOSOMIASIS SCHIZOAFFECTIVE SCHOLARLINESSES SCHOOLMASTERING SCHOOLMASTERISH SCHOOLTEACHINGS SCLEROTHERAPIES SCRATCHBUILDERS SCRATCHBUILDING SCRIMSHANDERING SEARCHABILITIES SEARCHINGNESSES SEAWORTHINESSES SEISMOGRAPHICAL SELENOGRAPHICAL SELENOGRAPHISTS SEMILOGARITHMIC SEMIPORNOGRAPHY SERVOMECHANICAL SERVOMECHANISMS SHERARDISATIONS SHERARDIZATIONS SHILLYSHALLIERS SHILLYSHALLYING SHOCKUMENTARIES SKETCHABILITIES SLEDGEHAMMERING SOCIOHISTORICAL SOPHISTICATEDLY SOPHISTICATIONS SOUTHEASTERLIES SPECTROGRAPHIES SPEECHIFICATION SPELEOTHERAPIES SPHAEROSIDERITE SPHERICALNESSES SPHEROIDISATION SPHEROIDIZATION SPHYGMOGRAPHIES SPINTHARISCOPES SPIROCHAETAEMIA SPLANCHNOLOGIES SPORANGIOPHORES SQUEAMISHNESSES STADHOLDERSHIPS STADTHOLDERSHIP STANDOFFISHNESS STAPHYLOPLASTIC STEEPLECHASINGS STEGANOGRAPHIES STEGANOGRAPHIST STEGOCEPHALIANS STEREOGRAPHICAL STIGMATOPHILIAS STIGMATOPHILIST STOECHIOLOGICAL STOICHIOLOGICAL STRAIGHTFORWARD STRAIGHTJACKETS STRATIGRAPHICAL STRATIGRAPHISTS STRATOSPHERICAL STREPHOSYMBOLIA SULFAMETHAZINES SULPHACETAMIDES SULPHANILAMIDES SULPHATHIAZOLES SULPHINPYRAZONE SULPHURISATIONS SULPHURIZATIONS SUPERCARGOSHIPS SUPERHUMANISING SUPERHUMANITIES SUPERHUMANIZING SYCOPHANTICALLY SYLLABOGRAPHIES SYMBOLOGRAPHIES SYMMETROPHOBIAS SYMPATHECTOMIES SYMPATHETICALLY SYMPATHOMIMETIC SYNARTHRODIALLY SYNCHRONISATION SYNCHRONISTICAL SYNCHRONIZATION SYNECDOCHICALLY SYNTHESISATIONS SYNTHESIZATIONS SYNTHETISATIONS SYNTHETIZATIONS TECHNICALNESSES TELAUTOGRAPHIES TETARTOHEDRISMS THALASSOCRACIES THALASSOGRAPHIC THALATTOCRACIES THANATOGRAPHIES THANKWORTHINESS THAUMATOLATRIES THEATRICALISING THEATRICALITIES THEOLOGISATIONS THEOLOGIZATIONS THEOSOPHISTICAL THERIANTHROPISM THERMAESTHESIAS THERMALISATIONS THERMALIZATIONS THERMOSTABILITY THERMOTHERAPIES THICKHEADEDNESS THINKABLENESSES THORACOCENTESIS THORACOPLASTIES THREMMATOLOGIES THROMBOPLASTINS TRAINSPOTTERISH TRANSHISTORICAL TRICHINISATIONS TRICHINIZATIONS TRICHOMONACIDES TRIHALOMETHANES TRIIODOMETHANES TRIMETHYLAMINES TRIPHENYLAMINES TRISOCTAHEDRONS UNANAESTHETISED UNANAESTHETIZED UNAPPREHENSIBLE UNCHRISTIANISED UNCHRISTIANISES UNCHRISTIANIZED UNCHRISTIANIZES UNCHRISTIANLIKE UNDEREMPHASISED UNDEREMPHASISES UNDEREMPHASIZED UNDEREMPHASIZES UNEARTHLINESSES UNHEALTHINESSES UNPHILOSOPHICAL UNSEAWORTHINESS UNSHAPELINESSES UNSOPHISTICATED UNTHINKABLENESS VAPOURISHNESSES WAPPENSCHAWINGS WEATHERISATIONS WEATHERIZATIONS WEATHERLINESSES WHIMSICALNESSES WHIPPERSNAPPERS WITHDRAWNNESSES ZINJANTHROPUSES ZYGOBRANCHIATES