: having or showing a disagreeable and unpleasant nature or temperament
He sat and brooded in a bad-natured and slightly drunken way.— Mary Gaitskill, Bad Behavior, 1988 With voice and gestures, he deftly sketches … the creepy, bad-natured chef, who's sadistic but melts into a puddle of insecurity when his cooking is criticized.— Holly Johnson, The Oregonian, 17 Apr. 2004