GUMMY Meaning of GUMMY in English ~ 1■ adjective ( gummier , gummiest ) viscous; sticky.Derivativesgumminess noun———————— ~ 2■ adjective ( gummier , gummiest ) toothless: a ~ grin. Derivativesgummily adverb Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004