Antonyms of adj mild-mannered

1 sense of mild-mannered

Sense 1
mild-mannered -- (behaving in or having a mild or gentle manner)

INDIRECT (VIA mild) -> intense -- (possessing or displaying a distinctive feature to a heightened degree; "intense heat"; "intense anxiety"; "intense desire"; "intense emotion"; "the skunk's intense acrid odor"; "intense pain"; "enemy fire was intense")

Similarity of adj mild-mannered

1 sense of mild-mannered

Sense 1
mild-mannered -- (behaving in or having a mild or gentle manner)
       => mild (vs. intense) -- (moderate in type or degree or effect or force; far from extreme; "a mild winter storm"; "a mild fever"; "fortunately the pain was mild"; "a mild rebuke"; "mild criticism")