There are 580 thirteen-letter words containing 2A, G and T, https://www.bestwordlist.com/c/a/4/13letterwordswithaagt.htm ABORIGINALITY ACCLIMATISING ACCLIMATIZING ACCOMMODATING ACCULTURATING ACHROMATISING ACHROMATIZING ACQUITTANCING ADVANTAGEABLE AEROGENERATOR AGALMATOLITES AGATHODAIMONS AGGIORNAMENTI AGGIORNAMENTO AGGLOMERATING AGGLOMERATION AGGLOMERATIVE AGGLUTINATING AGGLUTINATION AGGLUTINATIVE AGGRADATIONAL AGGRAVATINGLY AGGREGATENESS AGGREGATIONAL AGGREGATIVELY AGONISTICALLY AGRANULOCYTES ALPHABETISING ALPHABETIZING ALTERNATINGLY AMALGAMATIONS AMPHIGASTRIUM ANAGRAMMATISE ANAGRAMMATISM ANAGRAMMATIST ANAGRAMMATIZE ANASTIGMATISM ANGELOLATRIES ANGIOPLASTIES ANGLICISATION ANGLICIZATION ANIMADVERTING ANTAGONISABLE ANTAGONIZABLE ANTHROPOPHAGI ANTHROPOPHAGY ANTIALIASINGS ANTIANDROGENS ANTICIGARETTE ANTICOAGULANT ANTIGENICALLY ANTIGRAVITIES ANTIGUERRILLA ANTIHIJACKING ANTILOGARITHM ANYTHINGARIAN AORTOGRAPHIES APLANOGAMETES APOPHLEGMATIC APOTHEGMATISE APOTHEGMATIST APOTHEGMATIZE APPOGGIATURAS APPROPRIATING APPROXIMATING ARACHNOLOGIST ARCHAEOLOGIST ARCHEGONIATES ARGUMENTATION ARGUMENTATIVE ARPEGGIATIONS ARTERIALISING ARTERIALIZING ARTERIOGRAPHY ASSASSINATING ASSEMBLAGISTS ASSIGNABILITY ASSUBJUGATING ASTACOLOGICAL ASTACOLOGISTS AUGMENTATIONS AUGMENTATIVES AUTECOLOGICAL AUTOBIOGRAPHY AUTOGRAPHICAL AUTOMAGICALLY AUTORADIOGRAM AVERRUNCATING BACKSTABBINGS BACKSTARTINGS BACKSTRAIGHTS BACKTRACKINGS BACTERIOPHAGE BACTERIOPHAGY BANTAMWEIGHTS BEAUMONTAGUES BRAGGARTLIEST BREATHALYSING BREATHALYZING BROADCASTINGS CABINETMAKING CALCULATINGLY CALLIGRAPHIST CAMPANOLOGIST CAPTIVATINGLY CARBONYLATING CARBOXYLATING CARPETBAGGERS CARPETBAGGERY CARPETBAGGING CARTILAGINOUS CARTOGRAPHERS CARTOGRAPHIES CATALOGUISING CATALOGUIZING CATEGOREMATIC CATEGORICALLY CATEGORIZABLE CATERWAULINGS CATHODOGRAPHS CATHODOGRAPHY CHANGEABILITY CHARGEABILITY CHARTOGRAPHER CHARTOGRAPHIC CHROMATOGRAMS CHROMATOGRAPH CINEMATOGRAPH CLIMATOGRAPHY COAGULABILITY COASTGUARDMAN COASTGUARDMEN COLLABORATING COMANAGEMENTS COMPAGINATING COMPAGINATION CONCATENATING CONFABULATING CONFLAGRATING CONFLAGRATION CONFLAGRATIVE CONGRATULABLE CONGRATULANTS CONGRATULATED CONGRATULATES CONGRATULATOR CONJUGATIONAL CONTAMINATING CONTRAFAGOTTI CONTRAFAGOTTO DACTYLOGRAPHY DAMAGEABILITY DARRAIGNMENTS DAUGHTERBOARD DECAPSULATING DECARBONATING DEDRAMATISING DEDRAMATIZING DEFLAGRATIONS DEGLACIATIONS DEGRADABILITY DEGRANULATION DEPAUPERATING DERMATOGRAPHY DEVASTATINGLY DIAGNOSTICIAN DIALOGISTICAL DIAMAGNETISMS DIAPHRAGMATIC DIAPHRAGMITIS DIGLADIATIONS DISADVANTAGED DISADVANTAGES DISAGGREGATED DISAGGREGATES DISAMBIGUATED DISAMBIGUATES DISGRADATIONS DISPARAGEMENT DOGMATISATION DOGMATIZATION DRAGGLETAILED DRAMATURGICAL DRAMATURGISTS DRAUGHTBOARDS DRAUGHTSWOMAN EMARGINATIONS ENCAPSULATING ENDAMAGEMENTS ENGRAFTATIONS ENIGMATICALLY ENSANGUINATED EPIGRAMMATISE EPIGRAMMATISM EPIGRAMMATIST EPIGRAMMATIZE ERGASTOPLASMS ERGATOCRACIES ETHNOGRAPHICA EUSPORANGIATE EUTHANATISING EUTHANATIZING EVANGELISTARY EXAGGERATEDLY EXAGGERATIONS EXPURGATORIAL EXSANGUINATED EXSANGUINATES EXTRAGALACTIC EXTRAPOLATING EXTRAVAGANCES EXTRAVAGANTLY EXTRAVAGANZAS EXTRAVAGATING EXTRAVAGATION EXTRAVASATING FARTHINGLANDS FASCINATINGLY FATIGABLENESS FLABBERGASTED FLAGELLANTISM FLAGELLATIONS FRACTIONATING FRAGMENTARILY FRAGMENTATING FRAGMENTATION FUNAMBULATING GALACTAGOGUES GALACTOMETERS GALACTORRHEAS GALACTORRHOEA GALACTOSAEMIA GALACTOSAEMIC GALACTOSAMINE GALACTOSEMIAS GALACTOSIDASE GALLANTNESSES GALLICISATION GALLICIZATION GALRAVITCHING GALVANISATION GALVANIZATION GALVANOMETERS GALVANOMETRIC GALVANOPLASTY GALVANOTROPIC GAMIFICATIONS GAMOGENETICAL GANGSTERLANDS GASIFICATIONS GASTROLOGICAL GASTROMANCIES GASTRONOMICAL GASTRULATIONS GELATINATIONS GENTIANACEOUS GEOSTATIONARY GEOTACTICALLY GERATOLOGICAL GERIATRICIANS GERMANISATION GERMANIZATION GIGANTOMACHIA GLADIATORSHIP GLAMORISATION GLAMORIZATION GLIOBLASTOMAS GLOBALISATION GLOBALIZATION GNATHONICALLY GRADABILITIES GRADATIONALLY GRADUATESHIPS GRAMMATICALLY GRAMMATICISED GRAMMATICISES GRAMMATICISMS GRAMMATICIZED GRAMMATICIZES GRANDDAUGHTER GRANDFATHERED GRANDFATHERLY GRANDPARENTAL GRANDSTANDERS GRANDSTANDING GRANITISATION GRANITIZATION GRANTSMANSHIP GRANULARITIES GRANULOMATOUS GRAPHITISABLE GRAPHITIZABLE GRATICULATION GRATIFICATION GRAVIMETRICAL GRAVITATIONAL GUBERNATORIAL GYMNASTICALLY GYNAECOCRATIC GYNAECOMASTIA GYNECOMASTIAS HAEMANGIOMATA HAEMATOGENOUS HAEMATOLOGIES HAEMATOLOGIST HAGIOGRAPHIST HALLUCINATING HALOGENATIONS HANGABILITIES HARDSTANDINGS HARUSPICATING HEARTBREAKING HEMATOLOGICAL HEMATOPHAGOUS HIEROGRAMMATE HIEROGRAMMATS IDEOGRAMMATIC IMAGINATIONAL IMAGINATIVELY IMAGISTICALLY IMMIGRATIONAL IMPREGNATABLE INAUGURATIONS INCAPSULATING INCARCERATING INCARDINATING INDEFATIGABLE INDEFATIGABLY INEGALITARIAN INELABORATING INGRAFTATIONS INGRATIATIONS INSTAGRAMMING INSTANTIATING INTERCALATING INTERGALACTIC INTERGLACIALS INTERGRANULAR INTERMARGINAL INTERMARRIAGE INTRAGALACTIC INTRANSIGEANT INVAGINATIONS JARGONISATION JARGONIZATION JUDGMATICALLY KINEMATOGRAPH LANDGRAVIATES LEGALISATIONS LEGALIZATIONS LEGISLATORIAL LETHARGICALLY LIPOGRAMMATIC LOGARITHMICAL LOGOGRAMMATIC MACHICOLATING MAGISTERIALLY MAGISTRATICAL MAGISTRATURES MAGNANIMITIES MAGNETISATION MAGNETIZATION MAGNETOGRAPHS MAGNETOPAUSES MAGNETOSTATIC MAGNIFICATION MAINSTREAMING MAINTENANCING MALACOLOGISTS MALARIOLOGIST MANAGEABILITY MANAGERIALIST MANSLAUGHTERS MANUFACTURING MARGINALITIES MASTIGOPHORAN MATCHBOARDING MATERIALISING MATERIALIZING MATHEMATISING MATHEMATIZING MATRICULATING MEGAKARYOCYTE MEGALOBLASTIC MEGALOPOLITAN METAGNATHISMS METAGRABOLISE METAGRABOLIZE METALANGUAGES METALLOGRAPHY METALLURGICAL METASTASISING METASTASIZING METRORRHAGIAS MISALLOCATING MISCATALOGING MISCATALOGUED MISCATALOGUES MISEVALUATING MISMANAGEMENT MONOGRAMMATIC MULTIGRAVIDAE MULTIGRAVIDAS MULTIMEGAWATT MUTAGENICALLY NAPHTHALISING NAPHTHALIZING NARRATOLOGIES NARRATOLOGIST NARROWCASTING NATIONALISING NATIONALIZING NEMATOLOGICAL NIGHTWATCHMAN NOCTIVAGATION NONMANAGEMENT NONVEGETARIAN NOSTALGICALLY NOTHINGARIANS OCTOGENARIANS ORGANISATIONS ORGANIZATIONS ORGANOTHERAPY ORGIASTICALLY ORTHODIAGONAL OUTBARGAINING PAGANISATIONS PAGANIZATIONS PAINSTAKINGLY PAINTBALLINGS PALAEONTOLOGY PALEOMAGNETIC PANGRAMMATIST PANTOGRAPHERS PANTOGRAPHIES PANTOPHAGISTS PARAGNATHISMS PARAGRAPHISTS PARAMAGNETISM PARAMETRISING PARAMETRIZING PARASITOLOGIC PARLIAMENTING PARTICIPATING PATHOGRAPHIES PATRILINEAGES PERAMBULATING PERMANGANATES PHANTASMAGORY PHONAUTOGRAPH PHRAGMOPLASTS PLAGIOCLASTIC POSTGRADUATES POSTINAUGURAL POTAMOLOGICAL PRAGMATICALLY PRAGMATICISMS PRAGMATICISTS PREAMBULATING PREVARICATING PROGRADATIONS PROPAGABILITY PROPAGANDISTS PROPAGATIONAL PROSTAGLANDIN PROTOGALAXIES PROTOLANGUAGE PURGATORIALLY PUTANGITANGIS QUARTERSAWING RADIOTELEGRAM RATIOCINATING RATIONALISING RATIONALIZING REACCLIMATING REACQUAINTING REAGGREGATING REAGGREGATION REARRANGEMENT RECALCULATING RECALIBRATING RECATALOGUING RECTANGULARLY REINCARNATING REPAGINATIONS RETRANSLATING REVACCINATING SANCTUARISING SANCTUARIZING SANDBLASTINGS SANDPAINTINGS SAUROGNATHOUS SCAPEGOATINGS SCAPEGOATISMS SEGREGATIONAL SHADOWCASTING SIGNALISATION SIGNALIZATION SKATEBOARDING SLAUGHTERABLE SOMATOLOGICAL SPERMATOGONIA STAGECOACHING STAGECOACHMAN STAGECOACHMEN STALAGMITICAL STALAGMOMETER STALAGMOMETRY STANDARDISING STANDARDIZING STEGANOGRAPHS STEGANOGRAPHY STEGOSAURIANS STIGMATICALLY STRAIGHTAWAYS STRAIGHTLACED STRANGULATING STRANGULATION STRAPHANGINGS STRATEGETICAL STRATEGICALLY STRATIGRAPHER STRATIGRAPHIC SUBAGGREGATES SUBALLOCATING SUBTRIANGULAR SYLLABICATING SYNALLAGMATIC SYNTAGMATITES TACHYGRAPHERS TACHYGRAPHIES TACHYGRAPHIST TANGENTIALITY TANTALISINGLY TANTALIZINGLY TELAUTOGRAPHY TELEGRAMMATIC TERATOLOGICAL THANATOGRAPHY THANATOLOGIES THANATOLOGIST THAUMATURGICS THAUMATURGIES THAUMATURGISM THAUMATURGIST TOPOGRAPHICAL TRAILBLAZINGS TRANSLOCATING TRANSMIGRANTS TRANSMIGRATED TRANSMIGRATES TRANSMIGRATOR TRANSPLANTING TRIANGULARITY TRIANGULATELY TRIANGULATING TRIANGULATION TURANGAWAEWAE TYPOGRAPHICAL UNACQUAINTING UNCALCULATING UNDERGRADUATE UNEXAGGERATED UNGRAMMATICAL UNIMAGINATIVE UNINAUGURATED UPGRADABILITY URANOGRAPHIST VACILLATINGLY VAGRANTNESSES VEGETARIANISM VILLAGISATION VILLAGIZATION VILLEGGIATURA VULGARISATION VULGARIZATION WAISTCOATINGS WASHINGTONIAS WATERBOARDING ZEUGMATICALLY