curmudgeonly /kə(ɹ)ˈmʌdʒənli/ adjective1 •Characteristic of a curmudgeon; churlish.In A League of Their Own (1992), as the shouty baseball coach to an all-girls team, he's once again a curmudgeonly but lovable mentor figure. — 2021 formscurmudgeonlier · more curmudgeonly · curmudgeonliest · most curmudgeonly