doy /dɔɪ/exclamation 1noun 1forms 1 exclamation1 •Disdainful indication that something is obvious; see duh.—Wow, he looks pretty angry. —Doy! noun1 •(dialect) A term of address to a young child.Whear is thi' Daddy doy? Whear is thi' mam? / What are ta cryin for, poor little lamb? — 1872 formsdoys