All I know is that he's temperamental, and you'd better stay away from him.
She did say he was temperamental, Connie said.
He's really quite temperamental too, a bit unpredictable.
To give another example, such temperamental traits as irritability and strong negative reactivity are thought to contribute to the development of oppositional defiant disorder in some children.
Throughout his life he was much interested in politics, and though his temperamental indolence and his aversion for public life often prevented his accepting office, he exercised as a contributor, to the press and through his friendships, a powerful political influence, especially in New England.