There are 476 fourteen-letter words containing A, C, G, I and T, https://www.bestwordlist.com/c/a/5/14letterwordswithacgit.htm ACCELERATINGLY ACUPUNCTURINGS ADMINICULATING AESTHESIOGENIC AESTHETICISING AESTHETICIZING AETIOLOGICALLY AGGLUTINOGENIC AGRICULTURALLY AGRICULTURISTS AGROSTOLOGICAL ANAGRAMMATICAL ANGIOSARCOMATA ANGLICISATIONS ANGLICIZATIONS ANTHROPOPHAGIC ANTIALLERGENIC ANTICARCINOGEN ANTICARIOGENIC ANTICOAGULANTS ANTIESTROGENIC ANTIGENICITIES ANTIODONTALGIC ANTIPHLOGISTIC ANTITECHNOLOGY APOLOGETICALLY APOPHLEGMATICS APOPHTHEGMATIC APOTHEGMATICAL ARACHNOLOGISTS ARCHAEOLOGISTS ARCHGENETHLIAC ARTERIOGRAPHIC ASTIGMATICALLY ASTROLOGICALLY AUTHENTICATING AUTOBIOGRAPHIC AUTOCATALYSING AUTOCATALYZING AUTOCORRECTING BACKSCATTERING BACKSCRATCHING BACTERIOLOGIES BACTERIOLOGIST BACTERIOPHAGES BACTERIOPHAGIC BATHYGRAPHICAL BIOCLIMATOLOGY BIOGENETICALLY BLACKSMITHINGS BRANCHIOSTEGAL CABINETMAKINGS CALIGINOSITIES CALLIGRAPHISTS CAMPANOLOGISTS CANDLELIGHTERS CARCINOLOGISTS CARPETBAGGINGS CARTOGRAPHICAL CATEGORISATION CATEGORIZATION CENTRIFUGALISE CENTRIFUGALIZE CENTRIFUGATION CENTUPLICATING CHALCOGRAPHIST CHARACTERISING CHARACTERIZING CHARTOGRAPHIES CHIROGRAPHISTS CHLORARGYRITES CHLOROARGYRITE CHROMATOLOGIES CHROMATOLOGIST CINEMATOGRAPHS CINEMATOGRAPHY CIRCUMGYRATING CIRCUMGYRATION CIRCUMGYRATORY CIRCUMNAVIGATE CIRCUMNUTATING CIRCUMROTATING CIRCUMSTANCING CLIMATOLOGICAL CLIMATOLOGISTS COGITATIVENESS COGNOMINATIONS COINVESTIGATOR COLLEGIALITIES COMETOGRAPHIES COMPAGINATIONS COMPARTMENTING COMPURGATORIAL CONCELEBRATING CONCORPORATING CONDITIONATING CONFIGURATIONS CONFLAGRATIONS CONGENIALITIES CONGENITALNESS CONGLOBULATING CONGLOBULATION CONGLOMERATING CONGLOMERATION CONGLOMERATIVE CONGLUTINATING CONGLUTINATION CONGLUTINATIVE CONGLUTINATORS CONGRATULATING CONGRATULATION CONGRATULATIVE CONGREGATIONAL CONSERVATISING CONSERVATIZING CONSIGNATORIES CONTAGIOUSNESS CONTAINERISING CONTAINERIZING CONTRAGESTIONS CONTRAGESTIVES CONTRITURATING COSMOGRAPHISTS COTRANSFERRING COTRANSPORTING COUNTERARGUING COUNTERBRACING COUNTERDRAWING COUNTERMANDING COUNTERPLAYING COUNTERRAIDING COUNTERSEALING COUNTERSHADING COUNTERSTATING COUNTERTRADING COUNTERVAILING CREDENTIALINGS CREDENTIALLING CROSSHATCHINGS CRYPTOGRAPHIES CRYPTOGRAPHIST CYBERSQUATTING CYBERSTALKINGS CYTOPATHOGENIC DACTYLIOGRAPHY DACTYLIOLOGIES DACTYLOGRAPHIC DEARTICULATING DECAFFEINATING DECAPITALISING DECAPITALIZING DECENTRALISING DECENTRALIZING DECHLORINATING DECOMPENSATING DECONSECRATING DEFLOCCULATING DEPRECIATINGLY DERMATOGLYPHIC DERMATOGRAPHIC DERMATOLOGICAL DIAGENETICALLY DIAGNOSTICALLY DIAGNOSTICIANS DIAGRAMMATICAL DIALECTOLOGIES DIALECTOLOGIST DIGNIFICATIONS DISACCREDITING DISACCUSTOMING DISASSOCIATING DISCORPORATING DISCOURAGEMENT DISCRIMINATING DISINTRICATING DIVARICATINGLY DOGMATICALNESS ECTYPOGRAPHIES EGOCENTRICALLY ELECTROGRAPHIC ELECTROPLATING ENCEPHALITOGEN ENTERCHAUNGING EPEXEGETICALLY EPIGENETICALLY EPIGRAMMATICAL EQUIVOCATINGLY ERGASTOPLASMIC ESCHATOLOGICAL ESCHATOLOGISTS ESTROGENICALLY ETHNOGRAPHICAL ETHNOLOGICALLY ETYMOLOGICALLY EULOGISTICALLY EXACTINGNESSES EXCRUCIATINGLY EXTRAVAGANCIES FACTIONALISING FACTIONALIZING FANTASTICATING FIBROCARTILAGE FICTIONALISING FICTIONALIZING FRACTOGRAPHIES GALACTOMETRIES GALACTOPOIESES GALACTOPOIESIS GALACTOPOIETIC GALACTOSAEMIAS GALACTOSAMINES GALACTOSIDASES GALEOPITHECINE GALEOPITHECOID GALLICISATIONS GALLICIZATIONS GALVANOPLASTIC GASTROSCOPISTS GEMEINSCHAFTEN GENETHLIACALLY GENETHLIALOGIC GENTRIFICATION GEOCENTRICALLY GEODYNAMICISTS GEOGNOSTICALLY GEOPOLITICALLY GEOPOLITICIANS GEOSTRATEGICAL GERONTOCRACIES GERONTOLOGICAL GESTICULATIONS GIGANTICNESSES GIGANTOMACHIAS GIGANTOMACHIES GILLRAVITCHING GLORIFICATIONS GLYCOSYLATIONS GONADECTOMISED GONADECTOMIZED GRAMMATICALITY GRAMMATICASTER GRAMMATICISING GRAMMATICIZING GRATICULATIONS GRATIFICATIONS GYNAECOLOGISTS GYNAECOMASTIAS GYNAECOMASTIES GYROSTATICALLY HAEMATOGENETIC HAEMATOLOGICAL HEPATICOLOGIES HEPATICOLOGIST HERPETOLOGICAL HIEROGRAMMATIC HISTOGENICALLY HISTOLOGICALLY HYDROMAGNETICS HYETOGRAPHICAL IATROGENICALLY ICHTHYOLOGICAL ICHTHYOPHAGIES ICHTHYOPHAGIST ICHTHYOPHAGOUS ILLEGITIMACIES ILLOGICALITIES INCAPACITATING INCOGITABILITY INDOCTRINATING INTERCOMPARING INTOXICATINGLY INTRANSIGEANCE INTRANSIGENCES JINGOISTICALLY LACTOGLOBULINS LARYNGECTOMIES LARYNGOSCOPIST LAUGHINGSTOCKS LEGALISTICALLY LETTERSPACINGS LEXICOGRAPHIST LIGNIFICATIONS LINGUISTICALLY LINGUISTICIANS LITHOGRAPHICAL LITHOLOGICALLY MACROMARKETING MAGNETOSPHERIC MAGNETOSTATICS MAGNIFICATIONS MALFUNCTIONING MANUFACTURINGS MARTYROLOGICAL MATCHBOARDINGS MEGAKARYOCYTIC METACOGNITIONS METACOMPUTINGS METALINGUISTIC METALLOGENETIC METALLOGRAPHIC METEOROGRAPHIC METEOROLOGICAL METHODOLOGICAL METROLOGICALLY MICROGRAVITIES MICROMARKETING MICROPEGMATITE MISCALCULATING MISCATALOGUING MISCEGENATIONS MISOGYNISTICAL MISPUNCTUATING MORGANATICALLY MUTAGENICITIES MYSTAGOGICALLY MYTHOLOGICALLY NARRATOLOGICAL NARROWCASTINGS NOCTIVAGATIONS NONCIRCULATING NONGENETICALLY NONGEOMETRICAL NONGRAMMATICAL NONINTERACTING NONSIGNIFICANT NONTHEOLOGICAL NYCTAGINACEOUS OCTINGENTENARY OLFACTOLOGISTS OLIGOCYTHAEMIA ONYCHOPHAGISTS OPHTHALMOLOGIC OPISTHOGRAPHIC ORGANOMETALLIC ORNITHOLOGICAL OROGENETICALLY ORTHOGENICALLY ORTHOGRAPHICAL OSTEOLOGICALLY OVERDECORATING OVERMEDICATING PAGANISTICALLY PALAEOMAGNETIC PALEOECOLOGIST PALINGENETICAL PANGENETICALLY PANTOGRAPHICAL PANTOPRAGMATIC PARADIGMATICAL PARALINGUISTIC PARCHMENTISING PARCHMENTIZING PATHOLOGICALLY PEPTIDOGLYCANS PETROGRAPHICAL PETROLOGICALLY PHANTASMAGORIC PHARMACOLOGIST PHLEGMATICALLY PHLEGMATICNESS PHLOGISTICATED PHLOGISTICATES PHOTOGENICALLY PHOTOGRAPHICAL PHYTOGENETICAL PHYTOLOGICALLY PICTORIALISING PICTORIALIZING PLACENTOLOGIES PLANETOLOGICAL PNEUMOGASTRICS POLITICALISING POLITICALIZING POSTCOLLEGIATE POSTGANGLIONIC POSTSURGICALLY PRAGMATICALITY PREACQUAINTING PRECONTRACTING PREFABRICATING PRESANCTIFYING PRIMATOLOGICAL PROGNOSTICATED PROGNOSTICATES PROGNOSTICATOR PROPAGANDISTIC PTERIDOLOGICAL PTERYLOGRAPHIC PUGILISTICALLY QUARTERBACKING REACCELERATING REARTICULATING REBROADCASTING RECALCITRATING RECAPITALISING RECAPITALIZING RECAPITULATING RECATEGORIZING RECENTRALIZING RECONSECRATING RECTANGULARITY RIGIDIFICATION SANGUIFICATION SCHIZOGNATHOUS SCHOOLTEACHING SCINTIGRAPHIES SECTARIANISING SECTARIANIZING SECTIONALISING SECTIONALIZING SERODIAGNOSTIC SEXTUPLICATING SHADOWCASTINGS SIGNIFICATIONS SOPHISTICATING SOTERIOLOGICAL SOVIETOLOGICAL SPECTROGRAPHIC SPECTROLOGICAL SPONGIOBLASTIC STAGECOACHINGS STEEPLECHASING STEGANOGRAPHIC STEGOCEPHALIAN STENOGRAPHICAL STICKHANDLINGS STOMATOGASTRIC STOMATOLOGICAL STRAIGHTJACKET STYLOGRAPHICAL SUBCATEGORISED SUBCATEGORISES SUBCATEGORIZED SUBCATEGORIZES SUBCONTRACTING SUPPLICATINGLY SYCOPHANTISING SYCOPHANTIZING SYNERGETICALLY TACHYGRAPHICAL TACHYGRAPHISTS TAUTOLOGICALLY TECHNICALISING TECHNICALIZING TECHNOGRAPHIES TELANGIECTASES TELANGIECTASIA TELANGIECTASIS TELANGIECTATIC TELAUTOGRAPHIC TELECOTTAGINGS TELEOLOGICALLY TELEVANGELICAL TERATOGENICIST TERATOGENICITY TERMINOLOGICAL THANATOLOGICAL THAUMATURGICAL THERMOMAGNETIC TRAGICALNESSES TRAGICOMICALLY TRANSCENDINGLY TROPOLOGICALLY TURBOCHARGINGS ULTRAENERGETIC UNCHRISTIANING UNCONGENIALITY UNCONSECRATING UNDOGMATICALLY UNINTOXICATING VOLCANOLOGISTS VULCANOLOGISTS WEATHERCOCKING XENODIAGNOSTIC ZYGOBRANCHIATE ZYGODACTYLISMS