There are 486 fourteen-letter words containing A, G and U, https://www.bestwordlist.com/c/a/3/14letterwordswithagu.htm ABSQUATULATING ACUPUNCTURINGS ADMINICULATING ADVANTAGEOUSLY AGGLUTINATIONS AGGLUTINOGENIC AGRIBUSINESSES AGRICULTURALLY AGRICULTURISTS AGRIFOODSTUFFS AGROBUSINESSES AGROINDUSTRIAL AGROINDUSTRIES ANGIOSTOMATOUS ANGUSTIFOLIATE ANTHROPOPHAGUS ANTICOAGULANTS ANTIGUERRILLAS ANTIREGULATORY ARGUMENTATIONS ATTITUDINISING ATTITUDINIZING AUDIOLOGICALLY AUGMENTATIVELY AUTHENTICATING AUTOALLOGAMIES AUTOBIOGRAPHER AUTOBIOGRAPHIC AUTOCATALYSING AUTOCATALYZING AUTOCOPROPHAGY AUTOCORRECTING AUTORADIOGRAMS AUTORADIOGRAPH AUTOSUGGESTING AUTOSUGGESTION AUTOSUGGESTIVE AUTOTYPOGRAPHY BELEAGUERMENTS BILDUNGSROMANS BILINGUALITIES BLACKGUARDISMS BLACKGUARDLIER BOARDINGHOUSES BOUGAINVILLAEA BOUGAINVILLEAS BRASSFOUNDINGS BRAUNSCHWEIGER BREMSSTRAHLUNG CAMOUFLAGEABLE CENTRIFUGALISE CENTRIFUGALIZE CENTRIFUGATION CENTUPLICATING CIRCUMGYRATING CIRCUMGYRATION CIRCUMGYRATORY CIRCUMNAVIGATE CIRCUMNUTATING CIRCUMROTATING CIRCUMSTANCING CLEARINGHOUSES COACHBUILDINGS COASTGUARDSMAN COASTGUARDSMEN COLLEAGUESHIPS COMPURGATORIAL CONFIGURATIONS CONGLOBULATING CONGLOBULATION CONGLOMERATEUR CONGLUTINATING CONGLUTINATION CONGLUTINATIVE CONGLUTINATORS CONGRATULATING CONGRATULATION CONGRATULATIVE CONGRATULATORS CONGRATULATORY CONSANGUINEOUS CONTAGIOUSNESS CONTRITURATING COUNTERARGUING COUNTERBRACING COUNTERCHANGED COUNTERCHANGES COUNTERCHARGED COUNTERCHARGES COUNTERDRAWING COUNTERMANDING COUNTERPLAYING COUNTERRAIDING COUNTERSEALING COUNTERSHADING COUNTERSTATING COUNTERTRADING COUNTERVAILING COURAGEOUSNESS CYBERSQUATTING DAGUERREOTYPED DAGUERREOTYPER DAGUERREOTYPES DAUGHTERBOARDS DAUGHTERLINESS DEARTICULATING DEFLOCCULATING DEGLUTINATIONS DEGRANULATIONS DENATURALISING DENATURALIZING DENUCLEARISING DENUCLEARIZING DESULPHURATING DEUTERAGONISTS DEUTEROGAMISTS DISACCUSTOMING DISAMBIGUATING DISAMBIGUATION DISAUTHORISING DISAUTHORIZING DISCOURAGEABLE DISCOURAGEMENT DISCOURAGINGLY DISFIGURATIONS DISPAUPERISING DISPAUPERIZING DISQUANTITYING DISREGARDFULLY DOWNREGULATION DRAUGHTINESSES DRAUGHTPROOFED DRAUGHTSPERSON ENCOURAGEMENTS ENTERCHAUNGING EQUIANGULARITY EQUIVOCATINGLY EUGEOSYNCLINAL EULOGISTICALLY EVANGELIARIUMS EXCRUCIATINGLY EXSANGUINATING EXSANGUINATION EXSANGUINITIES EXTINGUISHABLE EXTINGUISHANTS FATIGUABLENESS FIGURABILITIES FIGURATIVENESS FLAGELLIFEROUS FLAGITIOUSNESS FLUOROGRAPHIES FRINGILLACEOUS GALACTOPHOROUS GASTRODUODENAL GASTROVASCULAR GELANDESPRUNGS GELATINOUSNESS GESTICULATIONS GEWURZTRAMINER GLABROUSNESSES GLAMOUROUSNESS GLANDULIFEROUS GLAUCOUSNESSES GLOBULARNESSES GLUCURONIDASES GLUTARALDEHYDE GRACEFULNESSES GRACIOUSNESSES GRANDDAUGHTERS GRANDILOQUENCE GRATEFULNESSES GRATICULATIONS GRATUITOUSNESS GREGARIOUSNESS GROUNDBREAKERS GROUNDBREAKING GUTTURALNESSES HAEMAGGLUTININ HAEMATOPHAGOUS HALLUCINOGENIC HAUSSMANNISING HAUSSMANNIZING HEADQUARTERING HEMAGGLUTINATE HEMAGGLUTININS HEMOGLOBINURIA HOUGHMAGANDIES HOUSEBREAKINGS HOUSECLEANINGS HUMBLEBRAGGING HYDRAULICKINGS ICHTHYOPHAGOUS ILLUMINATINGLY IMPOSTHUMATING INGURGITATIONS INTERLINGUALLY IRREGULARITIES ISOAGGLUTININS LACTOGLOBULINS LANGUOROUSNESS LANUGINOUSNESS LAUGHINGSTOCKS LAUGHWORTHIEST LIGNOSULFONATE LINGUISTICALLY LINGUISTICIANS LOGODAEDALUSES LONGITUDINALLY MACHINEGUNNING MACROGLOBULINS MAGNILOQUENCES MAGNILOQUENTLY MALFUNCTIONING MALPIGHIACEOUS MANGOLDWURZELS MANRIKIGUSARIS MANUFACTURINGS MASTIGOPHOROUS MEANINGFULNESS MEGALOSAURIANS MEGASPORANGIUM MEGASTRUCTURES MERCURIALISING MERCURIALIZING METACOMPUTINGS METALINGUISTIC MISATTRIBUTING MISCALCULATING MISCATALOGUING MISGOVERNAUNCE MISPUNCTUATING MONOGAMOUSNESS MONOLINGUALISM MOUNTAINEERING MOUNTEBANKINGS MOUSETRAPPINGS MUCILAGINOUSLY MULLIGATAWNIES MULTILINGUALLY MULTIMEGAWATTS MULTITHREADING MUNICIPALISING MUNICIPALIZING MUTAGENICITIES MYRMECOPHAGOUS NANOPUBLISHING NEUROGENICALLY NEUROLOGICALLY NEUROMARKETING NEUROPATHOLOGY NEURORADIOLOGY NONCIRCULATING NONJUDGEMENTAL NONREGULATIONS NUGATORINESSES NYCTAGINACEOUS OLEAGINOUSNESS OSMOREGULATION OSMOREGULATORY OUTFANGTHIEVES OUTGENERALLING OUTMANEUVERING OUTMANOEUVRING OUTRAGEOUSNESS OVERENCOURAGED OVERENCOURAGES OVEREVALUATING OVERGLAMOURIZE OVERPERSUADING OVERPOPULATING OVERREGULATING OVERREGULATION OVERSATURATING PARALINGUISTIC PHONAUTOGRAPHS PLECTOGNATHOUS PLOUGHMANSHIPS PNEUMATOLOGIES PNEUMATOLOGIST PNEUMOGASTRICS POSTGRADUATION POSTSURGICALLY PREACQUAINTING PREAUTHORIZING PREFIGURATIONS PREFORMULATING PROTOLANGUAGES PSEUDEPIGRAPHA PSEUDEPIGRAPHS PSEUDEPIGRAPHY PSEUDOGRAPHIES PSEUDOPREGNANT PSYCHOSURGICAL PUGILISTICALLY PUGNACIOUSNESS PYROMETALLURGY QUADRAGENARIAN QUADRANGULARLY QUADRIGEMINATE QUADRIGEMINOUS QUARTERBACKING QUINQUAGESIMAL RADIOAUTOGRAPH RADIOSURGERIES RAMPAGEOUSNESS REARTICULATING RECAPITULATING RECTANGULARITY REGULARISATION REGULARIZATION REGURGITATIONS REPOPULARISING REPOPULARIZING RHEUMATOLOGIES RHEUMATOLOGIST ROENTGENOPAQUE RUGGEDISATIONS RUGGEDIZATIONS SACRILEGIOUSLY SANGUIFICATION SANGUINARINESS SANGUINENESSES SANGUINIVOROUS SAUROPTERYGIAN SAXIFRAGACEOUS SCHIZOGNATHOUS SCHLUMBERGERAS SEPTUAGENARIAN SEPTUAGENARIES SEXTUPLICATING SINGULARNESSES SLAUGHTERHOUSE SLAUGHTEROUSLY SLUGGARDLINESS SLUGGARDNESSES SOLIDUNGULATES SOMNAMBULATING SPERMATOGENOUS SPERMATOGONIUM SPIRITUALISING SPIRITUALIZING STEGOCEPHALOUS STIGMATIFEROUS STRANGULATIONS SUBAGGREGATION SUBCATEGORISED SUBCATEGORISES SUBCATEGORIZED SUBCATEGORIZES SUBCLASSIFYING SUBCONTRACTING SUBGENERATIONS SUBGENERICALLY SUBINFEUDATING SUBIRRIGATIONS SUBSTANTIATING SUFFRAGANSHIPS SUFFRAGETTISMS SUFFUMIGATIONS SUMMERSAULTING SUPERABOUNDING SUPERANNUATING SUPERCARGOSHIP SUPERDELEGATES SUPERELEVATING SUPEREROGATING SUPEREROGATION SUPEREROGATIVE SUPEREROGATORS SUPEREROGATORY SUPERGRAVITIES SUPERHARDENING SUPERORGANISMS SUPEROVULATING SUPERREGIONALS SUPPLICATINGLY SUPRASEGMENTAL SURCHARGEMENTS SURPASSINGNESS SURROGATESHIPS TAUTOLOGICALLY TELAUTOGRAPHIC THAUMATOGENIES THAUMATOGRAPHY THAUMATOLOGIES THAUMATURGICAL THAUMATURGISMS THAUMATURGISTS THAUMATURGUSES THERMOREGULATE THOROUGHBASSES THOROUGHBRACED THOROUGHBRACES TRANQUILLISING TRANQUILLIZING TRANSVALUATING TRAUMATOLOGIES TRIANGULATIONS TRILINGUALISMS TROUBLEMAKINGS TSUTSUGAMUSHIS TURANGAWAEWAES TURBOCHARGINGS TURBOGENERATOR ULTRAENERGETIC ULTRAFILTERING ULTRAGLAMOROUS ULTRARELIGIOUS ULTRARIGHTISMS ULTRARIGHTISTS UMBRAGEOUSNESS UNACKNOWLEDGED UNAGGRESSIVELY UNAPPETISINGLY UNAPPETIZINGLY UNASPIRINGNESS UNASSUMINGNESS UNAVAILINGNESS UNCARINGNESSES UNCHANGINGNESS UNCHRISTIANING UNCONGENIALITY UNCONSECRATING UNCOURAGEOUSLY UNDERACHIEVING UNDERCARRIAGES UNDERDIAGNOSED UNDERDIAGNOSES UNDERDIAGNOSIS UNDERDRAINAGES UNDERGRADUATES UNDERGRADUETTE UNDERLEVERAGED UNDERPAINTINGS UNDERSTAFFINGS UNDERSTANDINGS UNDERSTRAPPING UNDESPAIRINGLY UNDOGMATICALLY UNEMBARRASSING UNENTERTAINING UNFADINGNESSES UNFLATTERINGLY UNGAINLINESSES UNGRACEFULNESS UNGRACIOUSNESS UNGRATEFULNESS UNHESITATINGLY UNILINGUALISMS UNILINGUALISTS UNILLUMINATING UNINGRATIATING UNINTIMIDATING UNINTOXICATING UNIVERSALISING UNIVERSALIZING UNMARRIAGEABLE UNNATURALISING UNNATURALIZING UNPROGRAMMABLE UNRECOGNISABLE UNRECOGNISABLY UNRECOGNIZABLE UNRECOGNIZABLY UNREFRIGERATED UNREGENERACIES UNREGENERATELY UNSENSUALISING UNSENSUALIZING UNSYMPATHISING UNSYMPATHIZING UPGRADEABILITY UPSTANDINGNESS URANOGRAPHICAL URANOGRAPHISTS UTEROGESTATION VAINGLORIOUSLY VILLEGGIATURAS VULCANOLOGICAL VULCANOLOGISTS VULGARISATIONS VULGARIZATIONS VULVOVAGINITIS WELTANSCHAUUNG ZINGIBERACEOUS