There are 625 nine-letter words containing A, G and 2I, https://www.bestwordlist.com/c/a/4/9letterwordswithagii.htm
ABIDINGLY ABIOGENIC ABORIGINE ABORIGINS ABRAIDING ABRIDGING ABSCISING
ABSEILING ABUILDING ACCINGING ACHIEVING ACQUIRING ACQUITING ACTIONING
ADDICTING ADJOINING ADMITTING ADONISING ADONIZING ADVISINGS AEGIRINES
AEGIRITES AERIFYING AFFIRMING AGATISING AGATIZING AGENISING AGENIZING
AGILITIES AGITATING AGITATION AGITATIVE AGONISING AGONISTIC AGONIZING
AIGUILLES ALGICIDAL ALGICIDES ALIASINGS ALIGHTING AMBIGUITY ANGLICISE
ANGLICISM ANGLICIST ANGLICIZE ANGLIFIED ANGLIFIES ANILINGUS ANIMATING
ANODISING ANODIZING ANOINTING ANTIAGING ANTICKING ANTICLING ANTIGENIC
ANTIKINGS ANTIQUING ANTITRAGI ANVILLING APPAIRING APPRISING APPRIZING
AQUILEGIA ARABISING ARABIZING ARCHIVING ARGILLITE ARGININES AROINTING
ARTICLING ASCRIBING ASSAILING ASSIEGING ASSIGNING ASSISTING ASSOILING
ASTIGMIAS ATHEISING ATHEIZING ATOMISING ATOMIZING ATTAINING ATTIRINGS
ATTRITING ATTUITING AUDIBLING AUDITINGS AUMAILING AURIFYING AZOTISING
AZOTIZING BAGPIPING BAIGNOIRE BAILLIAGE BANISHING BAPTISING BAPTIZING
BASIFYING BEWAILING BIGAMISTS BIGEMINAL BIGNONIAS BIGUANIDE BILINGUAL
BRAIDINGS BRAILLING BRAIRDING BRIGADIER BRIGADING CALCINING CAPRIFIGS
CAPSIZING CAPTIVING CAVILLING CHIACKING CHIAUSING CHICANING CHIGETAIS
CHILIAGON CHIRAGRIC CHIYOGAMI CIGARILLO CIGARLIKE CITIGRADE CLIMATING
CLIMAXING COALISING COALIZING CYANIDING CYANISING CYANIZING DAIKERING
DAIRYINGS DEHAIRING DERAILING DETAILING DETAINING DEVIATING DIADEMING
DIAGNOSIS DIALLAGIC DIALLINGS DIALOGING DIALOGISE DIALOGISM DIALOGIST
DIALOGITE DIALOGIZE DIALYSING DIALYZING DIAPERING DIARISING DIARIZING
DICTATING DIGAMISTS DIGASTRIC DIGIPACKS DIGITALIN DIGITALIS DIGITALLY
DIGITATED DIGLOSSIA DIGNITARY DIGRAPHIC DIPLEGIAS DISABLING DISARMING
DISCAGING DISCASING DISEASING DISFAMING DISMAYING DISPACING DISRATING
DISSAVING DUALISING DUALIZING DZIGGETAI EGALITIES EMAILINGS EMBAILING
EMICATING EMPAIRING ENIGMATIC ENTAILING EPILATING EVIRATING EVITATING
EXAMINING EXPIATING FAILINGLY FAINTINGS FAITHINGS FAMISHING FASTIGIUM
FATIGUING FILAGGRIN FILIATING FILIGRAIN FILIGRANE FINAGLING FINANCING
FOLIATING FRAGILITY GADOLINIC GAELICISE GAELICISM GAELICIZE GAINLIEST
GALLICISE GALLICISM GALLICIZE GALLISING GALLISISE GALLISIZE GALLIZING
GAMBITING GAMIFYING GAMINERIE GARCINIAS GARIBALDI GARISHING GASEITIES
GASIFIERS GASIFYING GASOLINIC GASTRITIC GASTRITIS GAVIALOID GAZILLION
GENIALISE GENIALITY GENIALIZE GENITALIA GENITALIC GENITIVAL GERIATRIC
GIANTISMS GIANTLIER GIANTLIKE GIANTRIES GIANTSHIP GIGANTISM GIGMANITY
GIMBALING GIRAFFIDS GIRAFFINE GIRAFFISH GIRAFFOID GLAIRIEST GLIADINES
GLISSANDI GLOCHIDIA GLOXINIAS GOLIARDIC GOLIASING GONIATITE GORILLIAN
GRACILITY GRAFFITIS GRAINIEST GRAININGS GRAITHING GRANITISE GRANITITE
GRANITIZE GRANITOID GRAPHITIC GRATIFIED GRATIFIER GRATIFIES GRAVIDITY
GRAVITIES GRAVITINO GRIMACING GRIMALKIN GRINDELIA GRISAILLE GRIVATION
GUANIDINE GUANIDINS GUITARIST HAGRIDING HAINCHING HAIRGRIPS HAIRSTING
HAIRWINGS HEMIALGIA HIGHCHAIR HIGHTAILS HIJACKING HILLOAING IBOGAINES
IDIOGRAMS IDIOGRAPH IGNITABLE IGUANIANS ILLAPSING ILLOGICAL IMAGERIES
IMAGINARY IMAGINEER IMAGINERS IMAGINING IMAGINIST IMAGISTIC IMBALMING
IMBARKING IMBARRING IMBATHING IMBLAZING IMITATING IMMASKING IMMIGRANT
IMMIGRATE IMPACTING IMPAIRING IMPARKING IMPARLING IMPARTING IMPASTING
IMPAWNING IMPLATING INARCHING INCANTING INCHASING INCOGNITA INDARTING
INDIGNANT INFALLING INFLAMING INFLATING INGLUVIAL INGRAINED INGRAINER
INLAYINGS INMIGRANT INORGANIC INSEAMING INSIGNIAS INSNARING INSTATING
INSTIGATE INTAGLIOS INTRIGANT INWALLING INWEAVING IRISATING IRRIGABLE
IRRIGABLY IRRIGATED IRRIGATES IRRIGATOR ISAGOGICS ISINGLASS ISLANDING
ISOGAMIES ISOLATING ITERATING JIGSAWING KIDNAPING KIRIGAMIS KYANISING
KYANIZING LADIFYING LAICISING LAICIZING LAIRISING LAIRIZING LARGITION
LARIATING LATTICING LAVISHING LAWGIVING LIBRATING LIGATIONS LILANGENI
LINGUICAS LINGUISAS LIQUATING LITIGABLE LITIGANTS LITIGATED LITIGATES
LITIGATOR LOGICIANS MACHINING MAGAININS MAGIANISM MAGICIANS MAGICKING
MAGNIFICO MAGNIFIED MAGNIFIER MAGNIFIES MAISTRING MALIGNING MALIGNITY
MALPIGHIA MANRIDING MARGINING MASHGIHIM MEDIATING MICHIGANS MICROGLIA
MIGMATITE MIGRAINES MIGRATING MIGRATION MILLIGALS MILLIGRAM MINIATING
MISACTING MISADDING MISAIMING MISALIGNS MISASSIGN MISDATING MISEATING
MISFARING MISGAGING MISLAYING MISMAKING MISMATING MISNAMING MISOGAMIC
MISPAGING MISRATING MISSAYING MISTAKING MITIGABLE MITIGANTS MITIGATED
MITIGATES MITIGATOR NARGILIES NAZIFYING NENNIGAIS NICTATING NIGRICANT
NITRATING OBBLIGATI OBTAINING OBVIATING OLIGAEMIA OLIGAEMIC OLIGEMIAS
OLIGURIAS ORDAINING ORGIASTIC ORIGINALS ORIGINARY ORIGINATE OXIDATING
PACIFYING PAINTINGS PANICKING PANTILING PERIGONIA PHIALLING PICKAXING
PIGNOLIAS PIGTAILED PILGARLIC PILLAGING PILLARING PIRATINGS PLAIDINGS
PLAININGS PLAITINGS PLICATING PRAISINGS QUAILINGS RABBITING RADIATING
RADIUSING RAILINGLY RAINTIGHT RAMIFYING RARIFYING RATIFYING RATIONING
RAVISHING RAWHIDING REALISING REALIZING REARISING REBAITING REDIALING
REGAINING REGICIDAL REGIMINAL REIMAGINE REIMAGING REMAILING REMAINING
RENAILING REPAIRING RERAILING RERAISING RESAILING RETAILING RETAINING
RIGATONIS RINGTAILS RIPSAWING RIVALLING RIZZARING RUINATING SAFARIING
SAGENITIC SAIBLINGS SAILORING SAINTLING SALIFYING SANIFYING SARDINING
SATIATING SCAITHING SERIATING SGRAFFITI SIAMESING SIAMEZING SIGILLARY
SIGILLATE SIGMATING SIGMATION SIGMATISM SIGMOIDAL SIGNALING SIGNALISE
SIGNALIZE SIGNARIES SIGNORIAL SIGNORIAS SIGNORINA SILAGEING SINNINGIA
SINUATING SIRNAMING SITUATING SIWASHING SKAITHING SLAIRGING SPAGIRIST
SPAIRGING SPIRALING SPRAINING SPRIGTAIL SQUAILING STAININGS STIGMATIC
STRAIKING STRAINING STRAITING STRIATING SWAININGS SWINGTAIL TAGLIONIS
TAIHOAING TAILLIGHT TAILORING TAIVERING TANGHININ TAPPICING TARIFFING
THRAIPING TIGRIDIAS TIKINAGAN TINGUAITE TITRATING TRAININGS TRAIPSING
TRIALLING TRIGAMIES TRIGAMIST TRIGYNIAN TRISAGION TZIGANIES UNABIDING
UNBIASING UNFAILING UNFAIRING UNHAIRING UNNAILING UNVAILING UPRAISING
URINATING VAGINITIS VAGINOSIS VAMPIRING VANISHING VARIATING VESTIGIAL
VIBRATING VICIATING VICINAGES VIGESIMAL VIGILANCE VIGILANTE VILIAGOES
VILLAGIER VILLAGIOS VILLIAGOS VINTAGING VIOLATING VIRAGOISH VIRGINALS
VIRGINIAS VISAGISTE VISAGISTS VITIATING VIZARDING VOISINAGE VRAICKING
WAILINGLY WAISTINGS WAITERING WAITINGLY WEIGELIAS WHAISLING WHAIZLING
WINGCHAIR XIPHOPAGI