violent temper; termagancy
Describes a fierce, hot-tempered, or quarrelsome personality, often associated with a rough or aggressive disposition. The term is somewhat literary and not extremely common in everyday conversation.
Everyone is at their wits' end with his violent temper.
That person's termagancy sometimes troubles those around them.
The exact derivation is uncertain. The kanji 鉄火 (iron and fire) suggest a fierce, fiery nature, and 肌 (skin) metaphorically refers to one's disposition or temperament.