There are 809 fourteen-letter words containing A, G, I, S and T, https://www.bestwordlist.com/c/a/5/14letterwordswithagist.htm ABSQUATULATING ACUPUNCTURINGS ADMINISTRATING AEROBIOLOGISTS AESTHESIOGENIC AESTHETICISING AESTHETICIZING AFFREIGHTMENTS AGGIORNAMENTOS AGGLOMERATIONS AGGLUTINATIONS AGGRANDISEMENT AGGRESSIVITIES AGREEABILITIES AGRICULTURISTS AGRIFOODSTUFFS AGROBIOLOGISTS AGROFORESTRIES AGROINDUSTRIAL AGROINDUSTRIES AGROSTOLOGICAL AGROSTOLOGISTS AGROTERRORISMS AIRTIGHTNESSES ALLEGORISATION ALMIGHTINESSES ANAESTHETISING ANAESTHETIZING ANAGRAMMATISED ANAGRAMMATISES ANAGRAMMATISMS ANAGRAMMATISTS ANAGRAMMATIZES ANASTIGMATISMS ANATHEMATISING ANESTHESIOLOGY ANGIOSARCOMATA ANGIOSTOMATOUS ANGLICISATIONS ANGLICIZATIONS ANGUSTIFOLIATE ANTAGONISATION ANTHROPOGENIES ANTHROPOGONIES ANTHROPOLOGIES ANTHROPOLOGIST ANTIAGGRESSION ANTICOAGULANTS ANTIESTROGENIC ANTIFOREIGNERS ANTIGENICITIES ANTIGUERRILLAS ANTILOGARITHMS ANTIOESTROGENS ANTIPHLOGISTIC ANYTHINGARIANS APOGEOTROPISMS APOPHLEGMATICS APOSTROPHISING APOSTROPHIZING APOTHEGMATISED APOTHEGMATISES APOTHEGMATISTS APOTHEGMATIZES ARACHNOLOGISTS ARCHAEOLOGISTS ARGUMENTATIONS ARTHROGRAPHIES ASSEVERATINGLY ASTIGMATICALLY ASTROBIOLOGIES ASTROBIOLOGIST ASTROGEOLOGIES ASTROGEOLOGIST ASTROLOGICALLY ASTRONAVIGATOR ATTITUDINISING AUTOALLOGAMIES AUTOCATALYSING AUTORADIOGRAMS AUTOSUGGESTING AUTOSUGGESTION AUTOSUGGESTIVE BACKSCATTERING BACKSCRATCHING BACTERIOLOGIES BACTERIOLOGIST BACTERIOPHAGES BIBLIOPHAGISTS BIGHEARTEDNESS BILINGUALITIES BIOREGIONALIST BLACKSMITHINGS BLAMESTORMINGS BRAINSTORMINGS BRANCHIOSTEGAL BREASTFEEDINGS CABINETMAKINGS CALIGINOSITIES CALLIGRAPHISTS CAMPANOLOGISTS CANDLELIGHTERS CARCINOLOGISTS CARPETBAGGINGS CATEGORISATION CENTRIFUGALISE CHALCOGRAPHIST CHARACTERISING CHARTOGRAPHIES CHIROGRAPHISTS CHLORARGYRITES CHROMATOLOGIES CHROMATOLOGIST CINEMATOGRAPHS CIRCUMSTANCING CLIMATOLOGISTS COGITATIVENESS COGNOMINATIONS COINVESTIGATOR COLLEGIALITIES COMETOGRAPHIES COMPAGINATIONS CONFIGURATIONS CONFLAGRATIONS CONGENIALITIES CONGENITALNESS CONGLUTINATORS CONSERVATISING CONSERVATIZING CONSIGNATORIES CONTAGIOUSNESS CONTAINERISING CONTRAGESTIONS CONTRAGESTIVES COSMOGRAPHISTS COTRANSFERRING COTRANSPORTING COUNTERSEALING COUNTERSHADING COUNTERSTATING CREDENTIALINGS CROSSHATCHINGS CRYPTOGRAPHIES CRYPTOGRAPHIST CYBERSQUATTING CYBERSTALKINGS DACTYLIOLOGIES DAUGHTERLINESS DECAPITALISING DECENTRALISING DECOMPENSATING DECONSECRATING DEFENESTRATING DEGLUTINATIONS DEGRANULATIONS DEMILITARISING DEMONETARISING DENATURALISING DEOXYGENATIONS DEPHLEGMATIONS DEREGISTRATION DERMATOLOGISTS DEROGATORINESS DESEGREGATIONS DESOBLIGEANTES DESTIGMATIZING DESULPHURATING DEUTERAGONISTS DEUTEROGAMISTS DIABETOLOGISTS DIAGEOTROPISMS DIAGNOSABILITY DIAGNOSTICALLY DIAGNOSTICIANS DIALECTOLOGIES DIALECTOLOGIST DIGITALISATION DIGNIFICATIONS DISACCREDITING DISACCUSTOMING DISADVANTAGING DISAFFILIATING DISAFFORESTING DISAGGREGATING DISAGGREGATION DISAGGREGATIVE DISAMBIGUATING DISAMBIGUATION DISARRANGEMENT DISASSOCIATING DISAUTHORISING DISAUTHORIZING DISCORPORATING DISCOURAGEMENT DISCRIMINATING DISENGAGEMENTS DISENTHRALLING DISFIGURATIONS DISINTEGRATING DISINTEGRATION DISINTEGRATIVE DISINTEGRATORS DISINTHRALLING DISINTRICATING DISINVIGORATED DISINVIGORATES DISOBLIGATIONS DISORIENTATING DISPARAGEMENTS DISPLEASANTING DISPROPRIATING DISQUANTITYING DOGMATICALNESS DOGMATISATIONS DOGMATIZATIONS DRAUGHTINESSES EARTHSHAKINGLY ECTYPOGRAPHIES EDITORIALISING EGALITARIANISM EMIGRATIONISTS EMOTIONALISING EPIGRAMMATISED EPIGRAMMATISER EPIGRAMMATISES EPIGRAMMATISMS EPIGRAMMATISTS EPIGRAMMATIZES EPISTOLOGRAPHY ERGASTOPLASMIC ESCHATOLOGICAL ESCHATOLOGISTS ESSENTIALISING ESSENTIALIZING ESTROGENICALLY EULOGISTICALLY EVANGELISATION EXACTINGNESSES EXASPERATINGLY EXSANGUINATING EXSANGUINATION EXSANGUINITIES EXTINGUISHABLE EXTINGUISHANTS EXTRAVAGANCIES EXTRAVAGATIONS FACTIONALISING FANTASTICATING FARSIGHTEDNESS FARTHINGSWORTH FATIGABILITIES FATIGUABLENESS FEATHERWEIGHTS FERRIMAGNETISM FERROMAGNETISM FICTIONALISING FIGURABILITIES FIGURATIVENESS FINGERBREADTHS FLABBERGASTING FLAGELLANTISMS FLAGITIOUSNESS FORGEABILITIES FRACTOGRAPHIES FRAGMENTATIONS FRANGIBILITIES GALACTOMETRIES GALACTOPOIESES GALACTOPOIESIS GALACTOSAEMIAS GALACTOSAMINES GALACTOSIDASES GALLICISATIONS GALLICIZATIONS GALVANISATIONS GALVANIZATIONS GALVANOMETRIES GALVANOPLASTIC GALVANOTROPISM GARNISHEEMENTS GASTIGHTNESSES GASTROPLASTIES GASTROSCOPISTS GELATINISATION GELATINOUSNESS GEMEINSCHAFTEN GENERALISATION GENERATIONISMS GENTLEMANLIEST GENTLEMANSHIPS GEODYNAMICISTS GEOGNOSTICALLY GEOMETRISATION GEOPOLITICIANS GEOSTRATEGICAL GEOSTRATEGISTS GERMANISATIONS GERMANIZATIONS GERONTOCRACIES GERONTOPHILIAS GERONTOPHOBIAS GESTICULATIONS GHETTOISATIONS GHETTOIZATIONS GIGANTICNESSES GIGANTOMACHIAS GIGANTOMACHIES GLADIATORSHIPS GLAMORISATIONS GLAMORIZATIONS GLIOBLASTOMATA GLOBALISATIONS GLOBALIZATIONS GLORIFICATIONS GLYCOSYLATIONS GLYPTOGRAPHIES GONADECTOMISED GONADOTROPHINS GRAMMATICASTER GRAMMATICISING GRAMMATOLOGIES GRAMMATOLOGIST GRANDSTANDINGS GRANGERISATION GRANITISATIONS GRANITIZATIONS GRANTSMANSHIPS GRAPHITISATION GRATICULATIONS GRATIFICATIONS GRATUITOUSNESS GREISENISATION GREISENIZATION GYNAECOLOGISTS GYNAECOMASTIAS GYNAECOMASTIES GYROMAGNETISMS GYROSTABILISER GYROSTABILIZER GYROSTATICALLY HAEMATOGENESIS HAEMATOLOGISTS HAGIOGRAPHISTS HAIRSPLITTINGS HAMARTIOLOGIES HATEMONGERINGS HEMAGGLUTININS HEPATICOLOGIES HEPATICOLOGIST HEPATOMEGALIES HETEROGAMETIES HETEROGLOSSIAS HETEROGRAPHIES HIEROGRAMMATES HISTOGENICALLY HISTOLOGICALLY HISTOPATHOLOGY HISTORIOGRAPHY HOMOGENISATION HYDROGENATIONS HYDROMAGNETICS ICHTHYOPHAGIES ICHTHYOPHAGIST ICHTHYOPHAGOUS IGNITABILITIES IGNORANTNESSES ILLEGALISATION ILLEGITIMACIES ILLOGICALITIES IMPIGNORATIONS IMPOSTHUMATING INDIGENISATION INEGALITARIANS INGURGITATIONS INORGANISATION INTANGIBLENESS INTEGRATIONIST INTELLIGENTSIA INTERDIGITATES INTERFEROGRAMS INTERLAYERINGS INTERMARRIAGES INTERREGIONALS INTERROGATIONS INTERROGATIVES INTERSEGMENTAL INTRANSIGEANCE INTRANSIGEANTS INTRANSIGENCES INTRANSIGENTLY INTROGRESSANTS INVESTIGATIONS IRREGULARITIES ISOAGGLUTININS ISOGEOTHERMALS JARGONISATIONS JARGONIZATIONS JINGOISTICALLY KINDERGARTNERS KINEMATOGRAPHS LACTOGLOBULINS LARYNGECTOMIES LARYNGOLOGISTS LARYNGOSCOPIST LAUGHINGSTOCKS LAUGHWORTHIEST LEGALISTICALLY LEGERDEMAINIST LEGISLATORSHIP LEGISLATRESSES LEGITIMATENESS LEGITIMATISING LEGITIMISATION LETTERSPACINGS LEXICOGRAPHIST LIGNIFICATIONS LIGNOSULFONATE LINGUISTICALLY LINGUISTICIANS LIPOGRAMMATISM LIPOGRAMMATIST LOGNORMALITIES LYMPHANGITIDES LYMPHANGITISES LYSOGENISATION LYSOGENIZATION MAGISTRALITIES MAGISTRATESHIP MAGNETISATIONS MAGNETIZATIONS MAGNETOMETRIES MAGNETOSPHERIC MAGNETOSTATICS MAGNIFICATIONS MAINSTREAMINGS MAINSTREETINGS MALARIOLOGISTS MALIMPRINTINGS MANAGERIALISTS MANUFACTURINGS MARTYROLOGISTS MASTIGOPHORANS MASTIGOPHOROUS MATCHBOARDINGS MEGALOPOLITANS METACOGNITIONS METACOMPUTINGS METAGRABOLISED METAGRABOLISES METAGRABOLIZES METAGROBOLISED METAGROBOLISES METAGROBOLIZES METALINGUISTIC METAMORPHOSING MICROGRAVITIES MISARRANGEMENT MISATTRIBUTING MISCALCULATING MISCATALOGUING MISCEGENATIONS MISMANAGEMENTS MISOGYNISTICAL MISPUNCTUATING MISTRANSLATING MITHRIDATISING MONGRELISATION MOUNTEBANKINGS MOUSETRAPPINGS MULLIGATAWNIES MULTIMEGAWATTS MUTAGENICITIES MYSTAGOGICALLY NARRATOLOGISTS NARROWCASTINGS NAVIGABILITIES NEGATIVENESSES NEGOTIATRESSES NEONATOLOGISTS NITROGELATINES NOCTIVAGATIONS NONNEGOTIABLES NONREGULATIONS NONSEGREGATION NONSIGNIFICANT NONVEGETARIANS NUGATORINESSES NYCTAGINACEOUS OBLIGATORINESS OBSTREPERATING ODONATOLOGISTS ODONTOGRAPHIES OESOPHAGITISES OLFACTOLOGISTS ONOMATOLOGISTS ONYCHOPHAGISTS OPISTHOGLOSSAL OPISTHOGRAPHIC OPPIGNERATIONS OPPIGNORATIONS ORGANISABILITY ORGANISATIONAL ORGANOGRAPHIST ORTHODIAGONALS ORTHOGNATHISMS ORTHOGONALISED ORTHOGONALISES ORTHOGONALIZES ORTHOGRAPHISTS OSMOREGULATION OSTEOLOGICALLY OUTFANGTHIEVES OVERBREATHINGS OVERESTIMATING OVERHARVESTING OVERSATURATING PAGANISTICALLY PALAEBIOLOGIST PALAEOGRAPHIST PALEOBIOLOGIST PALEOECOLOGIST PALEOMAGNETISM PALEOMAGNETIST PALEONTOLOGIES PALEONTOLOGIST PALEOZOOLOGIST PALINGENESISTS PANGRAMMATISTS PANTHEOLOGISTS PARAGRAMMATIST PARALINGUISTIC PARAMAGNETISMS PARAMETERISING PARASITOLOGIES PARASITOLOGIST PARCHMENTISING PARENTHESISING PARENTHESIZING PARLIAMENTINGS PATHOBIOLOGIES PEPTIDOGLYCANS PEREGRINATIONS PERINATOLOGIES PERINATOLOGIST PHANTASMAGORIA PHANTASMAGORIC PHARMACOLOGIST PHARYNGOLOGIST PHARYNGOTOMIES PHLEGMATICNESS PHLOGISTICATED PHLOGISTICATES PHONOGRAPHISTS PHOTOGRAPHISTS PHRASEOLOGISTS PICTORIALISING PIDGINISATIONS PIDGINIZATIONS PIEZOMAGNETISM PLACENTOLOGIES PLAGIOTROPISMS PLANETOLOGISTS PLAYWRIGHTINGS PNEUMATOLOGIES PNEUMATOLOGIST PNEUMOGASTRICS POLITICALISING POSTCOLLEGIATE POSTGANGLIONIC POSTGRADUATION POSTSURGICALLY PRAGMATISATION PREDESIGNATING PREDESIGNATION PREDESIGNATORY PREDESTINATING PREFIGURATIONS PREGNABILITIES PRESANCTIFYING PRIMATOLOGISTS PROGESTATIONAL PROGNOSTICATED PROGNOSTICATES PROGNOSTICATOR PROPAGANDISTIC PROSTAGLANDINS PUGILISTICALLY PYRAMIDOLOGIST RADIOBIOLOGIST RADIOTELEGRAMS REAGGREGATIONS REBROADCASTING RECAPITALISING RECONSECRATING REESTABLISHING REFRIGERATIONS REGIMENTATIONS REGISTRARSHIPS REGISTRATIONAL REGULARISATION REGURGITATIONS REINTEGRATIONS REINTERROGATES REINVESTIGATED REINVESTIGATES REINVIGORATORS REMILITARISING RENEGOTIATIONS REORGANISATION REOXYGENATIONS REPRISTINATING REREGISTRATION RESEGREGATIONS RETRANSFERRING RETRANSFORMING RETRANSMITTING RHEUMATOLOGIES RHEUMATOLOGIST RONTGENISATION RUGGEDISATIONS RUGGEDIZATIONS SALVAGEABILITY SANGUIFICATION SAUROPTERYGIAN SCHIZOGNATHOUS SCHOOLTEACHING SCINTIGRAPHIES SECTARIANISING SECTARIANIZING SECTIONALISING SECTIONALIZING SEGREGATIONIST SEIGNIORALTIES SELENOGRAPHIST SEMASIOLOGISTS SEPTUAGENARIAN SEPTUAGENARIES SERODIAGNOSTIC SERONEGATIVITY SEXTUPLICATING SHADOWCASTINGS SHAPESHIFTINGS SHARPSHOOTINGS SIGNALISATIONS SIGNALIZATIONS SIGNIFICATIONS SKATEBOARDINGS SOLIDUNGULATES SOMNAMBULATING SOPHISTICATING SOTERIOLOGICAL SOVIETOLOGICAL SPAGHETTIFYING SPECTROGRAPHIC SPECTROLOGICAL SPELAEOLOGISTS SPERMATOGENIES SPERMATOGONIAL SPERMATOGONIUM SPHAGNOLOGISTS SPIRITUALISING SPIRITUALIZING SPONGIOBLASTIC STAGECOACHINGS STAGFLATIONARY STEAMROLLERING STEAMTIGHTNESS STEEPLECHASING STEGANOGRAPHIC STEGOCEPHALIAN STENOGRAPHICAL STENOGRAPHISTS STEPPARENTINGS STEREOGRAPHIES STEREOGRAPHING STICKHANDLINGS STIGMATIFEROUS STIGMATISATION STIGMATIZATION STIGMATOPHILIA STOMATOGASTRIC STOMATOLOGICAL STOMATOLOGISTS STRAIGHTJACKET STRAIGHTNESSES STRANGULATIONS STRATIGRAPHERS STRATIGRAPHIES STRATIGRAPHIST STREETWALKINGS STRIKEBREAKING STYLOGRAPHICAL SUBAGGREGATION SUBCATEGORISED SUBCATEGORISES SUBCATEGORIZED SUBCATEGORIZES SUBCONTRACTING SUBGENERATIONS SUBINFEUDATING SUBIRRIGATIONS SUBSTANTIATING SUFFRAGETTISMS SUFFUMIGATIONS SUMMERSAULTING SUPERANNUATING SUPERELEVATING SUPEREROGATING SUPEREROGATION SUPEREROGATIVE SUPERGRAVITIES SUPEROVULATING SUPPLICATINGLY SURROGATESHIPS SWEETHEARTINGS SYCOPHANTISING SYCOPHANTIZING SYLLOGISATIONS SYLLOGIZATIONS SYMPTOMATISING SYMPTOMATIZING SYNERGETICALLY TACHYGRAPHISTS TANGIBLENESSES TECHNICALISING TECHNOGRAPHIES TELANGIECTASES TELANGIECTASIA TELANGIECTASIS TELECOTTAGINGS TELEMARKETINGS TELEVANGELISMS TELEVANGELISTS TENDOVAGINITIS TERATOGENICIST TERGIVERSATING TERGIVERSATION TERGIVERSATORS TERGIVERSATORY TETRASPORANGIA THANATOLOGISTS THAUMATOGENIES THAUMATOLOGIES THAUMATURGISMS THAUMATURGISTS THEOLOGISATION THERMOGRAPHIES THERMOSTATTING TRAGICALNESSES TRAINSPOTTINGS TRANQUILLISING TRANSCENDINGLY TRANSGENDERISM TRANSGRESSIONS TRANSMIGRATING TRANSMIGRATION TRANSMIGRATIVE TRANSMIGRATORS TRANSMIGRATORY TRANSMOGRIFIED TRANSMOGRIFIES TRANSPLANTINGS TRANSPORTINGLY TRANSSHIPPINGS TRANSVALUATING TRAUMATOLOGIES TRIANGULATIONS TRILINGUALISMS TROUBLEMAKINGS TSUTSUGAMUSHIS TURBOCHARGINGS ULTRARELIGIOUS ULTRARIGHTISMS ULTRARIGHTISTS UNAPPETISINGLY UNCHRISTIANING UNCONSECRATING UNDERPAINTINGS UNDERSTAFFINGS UNDERSTANDINGS UNDERSTRAPPING UNHESITATINGLY UNILINGUALISTS UNNATURALISING UNSYMPATHISING UNSYMPATHIZING UPSTANDINGNESS URANOGRAPHISTS UTEROGESTATION VEGETARIANISMS VEGETATIVENESS VERBIGERATIONS VIGILANTNESSES VILLAGISATIONS VILLAGIZATIONS VILLEGGIATURAS VOLCANOLOGISTS VULCANOLOGISTS VULGARISATIONS VULGARIZATIONS VULVOVAGINITIS WATERBOARDINGS WATERFLOODINGS WATERPROOFINGS WATERTIGHTNESS WOOLGATHERINGS XENODIAGNOSTIC ZOOPATHOLOGIES ZYGODACTYLISMS