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