There are 536 fourteen-letter words containing A, H, I and 2S, https://www.bestwordlist.com/c/a/5/14letterwordswithahiss.htm
ACATAMATHESIAS ACHROMATOPSIAS ADHESIVENESSES AESTHESIOGENIC AESTHETICISING
AFFENPINSCHERS AHISTORICITIES AIRTIGHTNESSES ALLOIOSTROPHOS ALMIGHTINESSES
AMATEURISHNESS AMBASSADORSHIP AMPHIARTHROSES AMPHIARTHROSIS AMPHIBIOUSNESS
AMPHIPROSTYLES ANAESTHETISING ANALPHABETISMS ANAPHRODISIACS ANESTHESIOLOGY
ANTIASTHMATICS ANTICENSORSHIP ANTIHARASSMENT ANTIHISTAMINES ANTIMECHANISTS
ANTIMETATHESES ANTIMETATHESIS ANTIPSYCHOTICS APOCHROMATISMS APOSTROPHISING
APOTHEGMATISES APOTHEGMATISTS ARACHNOLOGISTS ARCHAEOLOGISTS ARCHBISHOPRICS
ARCHPRIESTSHIP ARTHROPLASTIES ASSISTANTSHIPS ASSOCIATESHIPS ASTHENOSPHERIC
ASTRAPOPHOBIAS ASTROCHEMISTRY ASTROPHYSICIST AUTHORISATIONS AUTOCHTHONISMS
AUTOSCHEDIASMS AUTOSCHEDIAZES BARRISTERSHIPS BIBLIOPHAGISTS BIGHEARTEDNESS
BIPARTISANSHIP BISPHOSPHONATE BLACKSMITHINGS BLANCHISSEUSES BOARDINGHOUSES
BRACHYPTERISMS BRACKISHNESSES BRINKSMANSHIPS BRONCHIECTASES BRONCHIECTASIS
BRONCHOSPASTIC BRUSHABILITIES CALLIGRAPHISTS CANDIDATESHIPS CATASTROPHISMS
CATASTROPHISTS CATECHISATIONS CATECHUMENISMS CEPHALISATIONS CEPHALOSPORINS
CHARACTERISERS CHARITABLENESS CHIAROSCURISMS CHIAROSCURISTS CHIEFTAINESSES
CHIEFTAINSHIPS CHILDRENSWEARS CHIMERICALNESS CHIMNEYBREASTS CHIROGRAPHISTS
CHIVALROUSNESS CHOLELITHIASES CHOLELITHIASIS CHOLINESTERASE CHONDROMATOSIS
CHONDROSAMINES CHRESTOMATHIES CHRISTOPHANIES CHURCHMANSHIPS CLANNISHNESSES
CLAVICHORDISTS CLEARINGHOUSES CLISHMACLAVERS COADJUTORSHIPS COCHAIRPERSONS
COENAESTHESIAS COLLEAGUESHIPS COLLIESHANGIES COMMANDERSHIPS COMMISSARYSHIP
COMPANIONSHIPS CONSTABLESHIPS CONSULTANTSHIP CONTAINERSHIPS COPARTNERSHIPS
CORINTHIANISES COSMOGRAPHISTS CRAFTSMANSHIPS CRASHWORTHIEST CRAUNCHINESSES
CROSSHATCHINGS CRUSHABILITIES CRYPTAESTHESIA CRYPTESTHESIAS CUSTODIANSHIPS
CYSTOLITHIASES CYSTOLITHIASIS DAUGHTERLINESS DECHRISTIANISE DIAPHANOUSNESS
DISACCHARIDASE DISAUTHORISING DISENCHANTRESS DISENFRANCHISE DISESTABLISHED
DISESTABLISHES DISFRANCHISING DISHABILITATES DISHARMONISING DODECAPHONISMS
DODECAPHONISTS DRAFTSMANSHIPS DRAUGHTINESSES DUNDERHEADISMS DWARFISHNESSES
EMPHATICALNESS ENCEPHALITISES ENHYPOSTATISED ENHYPOSTATISES ENHYPOSTATIZES
ENTHUSIASTICAL EPITHELIALISES ESCHATOLOGISTS ESCHSCHOLTZIAS ESTABLISHMENTS
ETHNOBOTANISTS EUPHAUSIACEANS EXHAUSTIVENESS EXHAUSTIVITIES EXTINGUISHANTS
FAINTISHNESSES FAITHFULNESSES FARSIGHTEDNESS FASHIONMONGERS FASHIOUSNESSES
FATHERLINESSES FEATHERINESSES FETISHISATIONS FETISHIZATIONS FORESHADOWINGS
FRANCHISEMENTS FREAKISHNESSES GARNISHEEMENTS GASTIGHTNESSES GENTLEMANSHIPS
GHETTOISATIONS GLADIATORSHIPS GLOSSOGRAPHIES GRANTSMANSHIPS HABERDASHERIES
HABITUALNESSES HAEMATOGENESIS HAEMATOLOGISTS HAEMATOPOIESES HAEMATOPOIESIS
HAEMODIALYSERS HAGIOGRAPHISTS HAIRLESSNESSES HAIRSPLITTINGS HALFWITTEDNESS
HAMARTHRITISES HARDINGGRASSES HARMONIOUSNESS HARMONISATIONS HARPSICHORDIST
HARUSPICATIONS HAUSSMANNISING HAUSSMANNIZING HEADMASTERSHIP HEADMISTRESSES
HEATHENISHNESS HEAVENLINESSES HELLENISATIONS HEMEROCALLISES HERBORISATIONS
HEREDITARINESS HEROICALNESSES HETEROBLASTIES HETEROGLOSSIAS HETEROKARYOSIS
HETEROPLASTIES HEXOSAMINIDASE HIBERNISATIONS HIPPOPOTAMUSES HISPANIOLISING
HISTOPLASMOSES HISTOPLASMOSIS HISTORICALNESS HOMOEOPATHISTS HOMOSEXUALISMS
HOMOSEXUALISTS HORIZONTALNESS HOSPITABLENESS HOUSEBREAKINGS HOUSECLEANINGS
HYALINISATIONS HYALURONIDASES HYBRIDISATIONS HYDROACOUSTICS HYDROLYSATIONS
HYMENOPLASTIES HYPERAESTHESIA HYPERAESTHESIC HYPERESTHESIAS HYPERKERATOSIS
HYPERPARASITES HYPERPOLARISES HYPERPROSEXIAS HYPERURBANISMS HYPHENISATIONS
HYPNOTISATIONS ICHTHYOPSIDANS IMPERATORSHIPS INCHOATENESSES INHABITIVENESS
ISOGEOTHERMALS JUSTICIARSHIPS KINESIPATHISTS LACHRYMOSITIES LANDOWNERSHIPS
LAUGHINGSTOCKS LEATHERINESSES LEGISLATORSHIP LIBRARIANSHIPS LYCANTHROPISTS
LYMPHANGITISES MAGISTRATESHIP MARSIPOBRANCHS MASSOTHERAPIES MASSOTHERAPIST
MASTIGOPHORANS MASTIGOPHOROUS MATHEMATICISES MATHEMATICISMS MECHANICALISMS
MECHANICALNESS MECHANISATIONS MELANCHOLINESS MERCHANDISINGS MESOCEPHALISMS
METAPHYSICIANS METAPHYSICISED METAPHYSICISES METAPHYSICISTS METAPHYSICIZES
METHODICALNESS METHODISATIONS MISANTHROPISTS MISANTHROPOSES MISEMPHASISING
MISEMPHASIZING MODERATORSHIPS MONOCHROMASIES MULTIHOSPITALS MYTHICISATIONS
NARCOCATHARSIS NARCOSYNTHESIS NEURASTHENIACS NONCHAUVINISTS NONESTABLISHED
NONPERISHABLES OESOPHAGITISES OMBUDSMANSHIPS OMPHALOSKEPSIS ONCHOCERCIASES
ONCHOCERCIASIS ONYCHOPHAGISTS OPHTHALMITISES OPISTHOBRANCHS OPISTHOGLOSSAL
ORCHESTRALISTS ORCHESTRATIONS ORNITHISCHIANS ORTHOGNATHISMS ORTHOGONALISES
ORTHOGRAPHISTS ORTHOSILICATES OSTEOARTHRITIS OSTEOARTHROSIS OUTLANDISHNESS
OVEREMPHASISED OVEREMPHASISES OVEREMPHASIZES OVERENTHUSIASM PAEDOMORPHISMS
PAEDOMORPHOSIS PANAESTHETISMS PANARTHRITISES PANCHROMATISMS PANTHEOLOGISTS
PARENTHESISING PENDRAGONSHIPS PERISHABLENESS PHALANSTERIANS PHALANSTERISMS
PHALANSTERISTS PHARMACEUTISTS PHELLOPLASTICS PHENOMENALISES PHENOMENALISMS
PHENOMENALISTS PHILADELPHUSES PHILOSOPHASTER PHLEGMATICNESS PHLOGISTICATES
PHONETISATIONS PHONOGRAPHISTS PHOSPHOKINASES PHOSPHOLIPASES PHOTOCATALYSIS
PHOTOGRAPHISTS PHRASEOLOGISTS PHYSHARMONICAS PHYSICALNESSES PHYSICIANSHIPS
PHYSIOGRAPHERS PHYSIOGRAPHIES PICAYUNISHNESS PLASMAPHERESIS PLEURAPOPHYSIS
PLOUGHMANSHIPS POLYHISTORIANS POSTMASTERSHIP POSTULANTSHIPS PRANKISHNESSES
PREESTABLISHED PREESTABLISHES PRINCIPALSHIPS PROSTHODONTIAS PSEPHOANALYSIS
PSEUDAESTHESIA PSEUDARTHROSIS PSEUDEPIGRAPHS PSEUDOGRAPHIES PSILANTHROPIES
PSILANTHROPISM PSILANTHROPIST PSYCHASTHENIAS PSYCHASTHENICS PSYCHOACOUSTIC
PSYCHOANALYSIS PSYCHODYNAMICS PSYCHOGRAPHICS PSYCHOGRAPHIES PSYCHOPATHISTS
PSYCHOPHYSICAL PSYCHOSOCIALLY PSYCHOSOMATICS PSYCHOSURGICAL QUALMISHNESSES
RADIESTHESISTS REESTABLISHING REFASHIONMENTS REGISTRARSHIPS REHOSPITALISED
REHOSPITALISES REHOSPITALIZES RHABDOMANTISTS RHABDOMYOLYSIS RHINOSCLEROMAS
RHYTHMISATIONS ROADWORTHINESS SACCHARIFEROUS SACCHARIMETERS SACCHARINITIES
SACCHARISATION SADOMASOCHISMS SADOMASOCHISTS SCAMPISHNESSES SCHEMATISATION
SCHISMATICALLY SCHIZOGNATHOUS SCHIZOPHRENIAS SCHOLASTICALLY SCHOLASTICATES
SCHOLASTICISMS SCINTIGRAPHIES SCRATCHINESSES SCRIMSHANDERED SCRIMSHANDYING
SECRETARYSHIPS SEISMOGRAPHERS SEISMOGRAPHIES SELENOGRAPHIES SELENOGRAPHIST
SEMIOCHEMICALS SENESCHALSHIPS SERVOMECHANISM SHADOWCASTINGS SHADOWGRAPHIES
SHAMEWORTHIEST SHAPESHIFTINGS SHAREABILITIES SHARECROPPINGS SHARPSHOOTINGS
SHEEPSHEARINGS SHERARDISATION SHILLYSHALLIED SHILLYSHALLIER SHILLYSHALLIES
SHOCKABILITIES SHRINKFLATIONS SINANTHROPUSES SINDONOPHANIES SNAPPISHNESSES
SNEAKISHNESSES SOMAESTHESISES SOMATOTROPHINS SOPHISTICATING SOPHISTICATION
SOPHISTICATORS SPATHIPHYLLUMS SPECTATORSHIPS SPHAGNOLOGISTS SPHERICALITIES
SPINTHARISCOPE SPIROCHAETOSES SPIROCHAETOSIS SPOKESMANSHIPS SPORTFISHERMAN
SPORTSMANSHIPS SQUARISHNESSES STADHOLDERSHIP STAGECOACHINGS STATESMANSHIPS
STEALTHINESSES STEAMTIGHTNESS STEEPLECHASING STENOGRAPHISTS STEREOGRAPHIES
STICKHANDLINGS STOCHASTICALLY STRAIGHTNESSES STRATIGRAPHERS STRATIGRAPHIES
STRATIGRAPHIST SUBATMOSPHERIC SUBDEACONSHIPS SUFFRAGANSHIPS SULFATHIAZOLES
SULPHADIAZINES SULPHURISATION SUPERACHIEVERS SUPERCARGOSHIP SUPERHUMANISED
SUPERHUMANISES SUPERHUMANIZES SURROGATESHIPS SWAINISHNESSES SWEETHEARTINGS
SWORDSMANSHIPS SYCOPHANTISHLY SYCOPHANTISING SYCOPHANTLIEST SYMPATHOLYTICS
SYNAPOMORPHIES SYNTHESISATION SYNTHESIZATION SYNTHETISATION SYPHILISATIONS
SYPHILIZATIONS SYPHILOPHOBIAS TACHISTOSCOPES TACHISTOSCOPIC TACHYGRAPHISTS
TAUTOCHRONISMS THANATOLOGISTS THAUMATURGISMS THAUMATURGISTS THEANTHROPISMS
THEANTHROPISTS THEATRICALISES THEATRICALISMS THEATRICALNESS THEMATISATIONS
THERMAESTHESIA THERMESTHESIAS THERMOPLASTICS THORACOSTOMIES THROMBOKINASES
TRACHEOSCOPIES TRACHEOSTOMIES TRANSSHIPMENTS TRANSSHIPPINGS TREASURERSHIPS
TRICHOMONIASES TRICHOMONIASIS TRICHROMATISMS TRISACCHARIDES TSESAREVITCHES
TSESAREWITCHES TSUTSUGAMUSHIS ULTRARIGHTISMS ULTRARIGHTISTS UNANESTHETISED
UNATHLETICISMS UNCHANGINGNESS UNCHRISTIANISE UNDEREMPHASISE UNENTHUSIASTIC
UNFAITHFULNESS UNFASHIONABLES UNSOPHISTICATE UNSYMPATHISING URANOGRAPHISTS
VAPORISHNESSES VASOINHIBITORS WAPPENSHAWINGS WATERISHNESSES WATERTIGHTNESS
WHIMSICALITIES WHOREMASTERIES WOMANISHNESSES XANTHOCHROISMS XIPHIPLASTRALS
YACHTSMANSHIPS