Mammoth Uncensored Word List:
31 words ending with my, 7 letters long

academy alchemy alchymy anatomy apogamy axotomy balsamy bionomy economy eponymy exogamy isogamy isonomy jessamy myotomy pangamy perfumy phlegmy scotomy screamy scrummy squirmy streamy syngamy thrummy trigamy trisomy visnomy zoogamy zoonomy zootomy