There are 761 twelve-letter words containing A, G, R, S and T, https://www.bestwordlist.com/c/a/5/12letterwordswithagrst.htm ABRIDGEMENTS ACAROLOGISTS ADULTERISING ADVENTURINGS ADVERTISINGS ADVERTIZINGS AFTERGRASSES AFTERGROWTHS AGGLOMERATES AGGRADATIONS AGGRAVATIONS AGGREGATIONS AGGRESSIVITY AGRICULTURES AGRIPRODUCTS AGRITOURISMS AGRITOURISTS AGROFORESTER AGROFORESTRY AGROINDUSTRY AGROSTEMMATA AGROSTOLOGIC AGROTOURISMS AGROTOURISTS AGUARDIENTES AIRTIGHTNESS ALPHASORTING AMALGAMATORS AMPHIGASTRIA ANDROLOGISTS ANGULARITIES ANNABERGITES ANOTHERGUESS ANTHOLOGISER ANTIESTROGEN ANTIGROPELOS ARBITRAGEURS ARCHEOLOGIST ARGUTENESSES ARISTOLOGIES ARRAIGNMENTS ARRANGEMENTS ARTERIOGRAMS ASCERTAINING ASPERGATIONS ASSEVERATING ASTRINGENCES ASTRINGENTLY ASTROBIOLOGY ASTROGEOLOGY ASTROLOGICAL ASTROLOGISTS ASTROTURFING AUTOCHANGERS AUTOGRAPHIES AUTOGRAVURES BACKDRAUGHTS BACKSTARTING BACKSTRAIGHT BACKSTROKING BAREBOATINGS BARGEMASTERS BARNSTORMING BASTARDISING BASTARDIZING BEARBAITINGS BEARDTONGUES BEPLASTERING BESCATTERING BESPATTERING BESTRADDLING BRAGGARTISMS BRATTISHINGS BREAKFASTING BREASTPLOUGH BROADCASTING BROWBEATINGS BURGOMASTERS CALYPTROGENS CARDIOLOGIST CARPOLOGISTS CATEGORISING CENTIGRAMMES CENTIMORGANS CENTRALISING CENTRIFUGALS CERARGYRITES CEROGRAPHIST CHARGESHEETS CHEATGRASSES CIRCULATINGS COASTEERINGS COGENERATORS COLOGARITHMS COLORCASTING COMPURGATORS CONFIGURATES CONFLAGRATES CONGREGATORS CONSECRATING CONSIGNATORY CONSTRAINING CONVERSATING COPROPHAGIST CORRUGATIONS CRANIOLOGIST CRYPTOGAMIES CRYPTOGAMIST CRYPTOGAMOUS CRYPTOGRAPHS CRYSTALISING CRYSTALIZING DACTYLOGRAMS DAUGHTERLESS DEASPIRATING DEERSTALKING DEFLAGRATORS DEGRADATIONS DEMAGNETISER DEMIGRATIONS DEMOGRAPHIST DENATURISING DENIGRATIONS DERAIGNMENTS DERANGEMENTS DEREGULATORS DERIVATISING DESAGREMENTS DESATURATING DESEGREGATED DESEGREGATES DESIDERATING DIGITIGRADES DIGLADIATORS DISAGGREGATE DISAGREEMENT DISFEATURING DISGRADATION DISGREGATION DISINTEGRATE DISSERTATING DISTRAUGHTLY DISTRINGASES DOWNDRAUGHTS DRAGONFRUITS DRAMATURGIES DRAMATURGIST DRAUGHTINESS DREADNAUGHTS DREADNOUGHTS DRUMBEATINGS EARSPLITTING EARTHMOVINGS EARTHSHAKING EAVESTROUGHS EGALITARIANS ELECTROGRAMS EMPLASTERING ENERGISATION ENGRAFTMENTS ENGRAILMENTS ENLARGEMENTS ENTREASURING EPIGRAPHISTS ERGASTOPLASM ERGATIVITIES ERGATOMORPHS ESTRANGEMENT ESTRANGHELOS ETERNALISING EVERLASTINGS EVISCERATING EXAGGERATORS EXASPERATING EXCOGITATORS EXPURGATIONS EXTRAVAGATES FARSIGHTEDLY FARTHINGALES FARTHINGLESS FEATHEREDGES FENESTRATING FERRIMAGNETS FERROMAGNETS FERTIGATIONS FESTIVALGOER FINGERPLATES FINGERSTALLS FLABBERGASTS FLAGELLATORS FLAGRANTNESS FOOTDRAGGERS FORECASTINGS FORESTALLING FOTHERGILLAS FRAGMENTATES FRAGMENTISED FRAGMENTISES FRAGMENTIZES FRAGRANTNESS FRATERNISING FREESTANDING FULGURATIONS GAINSTRIVING GALRAVITCHES GAMETOPHORES GAMMERSTANGS GAMOTROPISMS GANGSTERDOMS GANGSTERISMS GANGSTERLAND GARBOLOGISTS GARNISHMENTS GASOMETRICAL GASTROCNEMII GASTROLOGERS GASTROLOGIES GASTROLOGIST GASTRONOMERS GASTRONOMICS GASTRONOMIES GASTRONOMIST GASTROPLASTY GASTROPODANS GASTROPODOUS GASTROSCOPES GASTROSCOPIC GASTROSOPHER GASTROTOMIES GASTROTRICHS GASTRULATING GASTRULATION GATECRASHERS GATECRASHING GAZETTEERISH GELATINISERS GELATINIZERS GENERALITIES GENERATRICES GEOSTRATEGIC GERATOLOGIES GERATOLOGIST GERMINATIONS GERONTOCRATS GESTICULATOR GILRAVITCHES GIRDLESTEADS GLASSCUTTERS GLOMERATIONS GLYCERINATES GNATCATCHERS GODDAUGHTERS GOSSAMERIEST GOUVERNANTES GOVERNORATES GRACEFULLEST GRACIOSITIES GRADIOMETERS GRADUALISTIC GRADUALITIES GRADUATESHIP GRAMMATICISE GRAMMATICISM GRAMOPHONIST GRANDFATHERS GRANDMASTERS GRANDMOTHERS GRANDPARENTS GRANDSTANDED GRANDSTANDER GRANITEWARES GRANOLITHICS GRANULATIONS GRANULOCYTES GRAPHITISING GRAPHOLOGIST GRATEFULLEST GRATEFULNESS GRATILLITIES GRATUITOUSLY GRATULATIONS GRAVIMETRIES GRAVITATIONS GRAVITROPISM GREASEPAINTS GROATSWORTHS GROSSULARITE GROUNDWATERS GUBERNATIONS GUITARFISHES GURGITATIONS GUTTURALISED GUTTURALISES GUTTURALISMS GUTTURALIZES GUTTURALNESS GYMNATORIUMS GYNIOLATRIES HAGIOLATRIES HAGIOLATROUS HAIRCUTTINGS HAIRSTYLINGS HAMSTRINGING HANDWRITINGS HARDSTANDING HEADSTRONGLY HEARTSTRINGS HECTOGRAMMES HELLGRAMITES HETEROGAMIES HETEROGAMOUS HETEROGRAFTS HUCKSTERAGES HYDROGENATES HYGROCHASTIC HYPOGASTRIUM IATROGENESES IATROGENESIS IDOLATRISING IGNORANTNESS ILLUSTRATING IMMIGRATIONS IMMISERATING IMPIGNORATES IMPREGNATORS INAUGURATORS INCRASSATING INGATHERINGS INGRAFTMENTS INGRATITUDES INGRAVESCENT INGURGITATES INSTAGRAMMED INSTREAMINGS INTEGRATIONS INTERCHANGES INTERDASHING INTERFACINGS INTERLEAGUES INTERLINGUAS INTERROBANGS INTERROGANTS INTERROGATES INTERSPACING INTERTANGLES INTRANSIGENT INTRIGUANTES INVESTIGATOR INVIGILATORS INVIGORATORS KARYOLOGISTS KERATINISING KERATOGENOUS KICKSTARTING KINETOGRAPHS LAGGARDLIEST LAMPLIGHTERS LANDGRAVATES LARYNGITIDES LARYNGITISES LATCHSTRINGS LATERALISING LEATHERGOODS LEGISLATRESS LEGISLATURES LEGITIMATORS LETHARGISING LIBERTINAGES LITERALISING LONGIROSTRAL MACROGAMETES MADRIGALISTS MAGISTERIUMS MAGISTRACIES MAGISTRALITY MAGISTRATURE MAJORETTINGS MANGALSUTRAS MANSLAUGHTER MARATHONINGS MARGINALISTS MARGINATIONS MARGRAVIATES MASTERSINGER MASTIGOPHORE MASTURBATING MEGAPROJECTS MEGASTARDOMS MENSTRUATING MERCHANTINGS MESOGASTRIUM METALLURGIES METALLURGIST METAPHRASING METEOROGRAMS MICROGAMETES MIGRATIONIST MILITARISING MINERALOGIST MISCEGENATOR MISFEATURING MISTREADINGS MONOGRAPHIST MYOGRAPHISTS NATURALISING NEGOTIATRESS NEUTRALISING NIGGARDLIEST NIGHTMARIEST NIGHTWALKERS NITROGENASES NONARGUMENTS NONGRADUATES NONINTEGRALS NONSTRATEGIC NUGATORINESS OBJURGATIONS OCTOGENARIES ODONTOGRAPHS OPISTHOGRAPH OPPIGNERATES OPPIGNORATES ORGANICISTIC ORGANICITIES ORGANISATION ORGANISTRUMS ORGANOLOGIST ORGASTICALLY ORIGINALISTS ORIGINATIONS OSTREOPHAGES OUTMARRIAGES OUTMASTERING OUTMEASURING OUTORGANISED OUTORGANISES OUTORGANIZES OUTRAGEOUSLY OUTREASONING OUTSAVOURING OUTSCREAMING OUTSPARKLING OUTSPREADING OUTSTRAINING OVERCASTINGS OVERCOATINGS OVERDRAUGHTS OVERFATIGUES OVERGARMENTS OVERHEATINGS OVERROASTING OVERSTAFFING OVERSTAINING OVERSTANDING OVERTRADINGS OVERVOLTAGES PAPERWEIGHTS PAPYROLOGIST PARACHUTINGS PARAGLOSSATE PARAGNATHISM PARAGNATHOUS PARAGRAPHIST PARALOGISTIC PARAPENTINGS PARASITISING PARASITIZING PARASITOLOGY PARATUNGSTIC PARTIALISING PASTEURISING PASTEURIZING PATRIALISING PATROLOGISTS PEREGRINATES PERSONATINGS PERSPIRATING PHRAGMOPLAST PIGNERATIONS PIGNORATIONS PLAGIARISTIC PLANTIGRADES PLATFORMINGS PLAYWRITINGS POETASTERING POLYGRAPHIST POMEGRANATES POSTGRADUATE POSTORGASMIC POSTSURGICAL PRAGMATICISM PRAGMATICIST PRAGMATISERS PRAGMATISING PRAGMATISTIC PRAGMATIZERS PREADJUSTING PRECOGNISANT PREDESIGNATE PREFIGURATES PREGUSTATION PREROGATIVES PRESAGEMENTS PRESLAUGHTER PRESTIGIATOR PRETEENAGERS PRINTMAKINGS PROGNATHISMS PROMULGATORS PROPAGANDIST PROPAGATIONS PROROGATIONS PROTAGONISMS PROTAGONISTS PURGATORIANS PURITANISING PYRARGYRITES PYROGALLATES QUARRINGTONS RADIOLOGISTS RANKSHIFTING RATBAGGERIES REAGGREGATES REALIGNMENTS REASSIGNMENT RECATALOGUES REESCALATING REESTIMATING REFRIGERANTS REFRIGERATES REGENERATORS REGIONALISTS REGISTERABLE REGISTRARIES REGISTRATION REGULARITIES REGURGITANTS REGURGITATES REINSTALLING REINTEGRATES RELATIVISING REMIGRATIONS RENEGOTIATES REOXYGENATES REPLASTERING RESEGREGATED RESEGREGATES RESIGNATIONS RESTATIONING RESTRAININGS RETROUSSAGES REVITALISING ROTOGRAVURES ROUGHCASTERS ROUGHCASTING RUSTICATINGS SACRAMENTING SACRILEGISTS SAUNTERINGLY SCATTERGOODS SCATTERGRAMS SCATTERINGLY SCATTERLINGS SCINTIGRAPHY SCRATCHINGLY SEARCHLIGHTS SECRETAGOGIC SECRETAGOGUE SEGREGATIONS SEIGNIORALTY SEPTUAGENARY SERGEANTSHIP SERONEGATIVE SHATTERINGLY SHIRTTAILING SHORTCHANGED SHORTCHANGER SHORTCHANGES SHORTGRASSES SIDETRACKING SIGNIFICATOR SINGLETRACKS SINGULARISTS SLAUGHTERERS SLAUGHTERIES SLAUGHTERING SLAUGHTERMAN SLAUGHTERMEN SLAUGHTEROUS SMATTERINGLY SPECTROGRAMS SPECTROGRAPH SPERMATOGENY SPHRAGISTICS SPRINGWATERS STAGGERINGLY STAIRCASINGS STAMMERINGLY STARBOARDING STARFUCKINGS STEAMROLLING STEERAGEWAYS STEGANOGRAMS STEGANOGRAPH STEGOCARPOUS STEGOSAURIAN STENOGRAPHED STENOGRAPHER STENOGRAPHIC STEPDAUGHTER STERCORATING STEREOGRAPHS STEREOGRAPHY STEVENGRAPHS STIGMASTEROL STIGMATISERS STIGMATIZERS STRAGGLINGLY STRAIGHTAWAY STRAIGHTBRED STRAIGHTEDGE STRAIGHTENED STRAIGHTENER STRAIGHTNESS STRAIGHTWAYS STRANGLEHOLD STRANGLEMENT STRANGULATED STRANGULATES STRAPHANGERS STRAPHANGING STRAPPADOING STRATEGISING STRATEGIZING STRATIGRAPHY STRAWWEIGHTS STREAMLINING STRIDULATING STRINGBOARDS STRINGHALTED STRINGYBARKS STRIPPAGRAMS STRIPPERGRAM STROBILATING STRONGARMING STYLOGRAPHIC SUBAGGREGATE SUBFRAGMENTS SUBIRRIGATED SUBIRRIGATES SUBROGATIONS SUBSTRACTING SUFFRAGETTES SUGARCOATING SULPHURATING SUPEREROGANT SUPEREROGATE SUPERGRAVITY SUPERHEATING SUPRAGLOTTAL SURFCASTINGS SURROGATIONS SWEETGRASSES TABULARISING TALEBEARINGS TARGETITISES TELEGRAPHERS TELEGRAPHESE TELEGRAPHIES TELEGRAPHIST TERATOGENIES TERATOLOGIES TERATOLOGIST TERGIVERSANT TERGIVERSATE TERMAGANCIES TETRAPLEGIAS THANKSGIVERS THARBOROUGHS THAUMATURGES THAUMATURGUS THEATERGOERS THEATREGOERS THEOLOGASTER THEREAGAINST THERMALISING THERMOGRAPHS THOROUGHBASS THREATENINGS THROUGHFARES THROUGHGAUNS TOMOGRAPHIES TOPOGRAPHERS TOPOGRAPHIES TORSIOGRAPHS TRACKLAYINGS TRAFFICKINGS TRAGEDIENNES TRAGICALNESS TRANSCENDING TRANSCRIBING TRANSFECTING TRANSFERRING TRANSFIGURED TRANSFIGURES TRANSFORMING TRANSGENDERS TRANSGENESES TRANSGENESIS TRANSGRESSED TRANSGRESSES TRANSGRESSOR TRANSHIPPING TRANSMIGRANT TRANSMIGRATE TRANSMITTING TRANSMOGRIFY TRANSPORTING TRANSPOSINGS TRANSSHAPING TRANSVAGINAL TRANSVALUING TRANSVERSING TRANSVESTING TRAPSHOOTING TRAUMATISING TRIANGULATES TRITAGONISTS TRIVIALISING TYPOGRAPHERS TYPOGRAPHIES TYPOGRAPHIST UNDERSTATING UNDERTAKINGS UNGUENTARIES UNSEGREGATED UNTREASURING UPGRADATIONS URBANOLOGIST VANGUARDISTS VARIEGATIONS VERBIGERATES VINAIGRETTES VINEGARETTES VIRGINALISTS VIRTUALISING WAGONWRIGHTS WAITRESSINGS WARRANTISING WATCHSPRINGS WATERGLASSES WATERSKIINGS WEATHERGIRLS WEATHERGLASS WEATHERISING WHEATGRASSES WHEREAGAINST WIRETAPPINGS WITCHGRASSES ZOOGRAFTINGS ZOOGRAPHISTS