Sally is such a nutter. She would forget her head if it wasn't screwed on.That guy is a real nutter. Thinks he can get a cab at this hour.
nutter
noun a crazy person; a lunatic; an eccentric. Extended from NUT (a lunatic) UK, 1958
nutter
Someone considered crazy or wacky. My friend Jake is a total nutter, always pulling the most reckless, crazy stunts.My step-father threatened to have me locked away with the other nutters.
nutter
n. a nutty person. That guy is a real nutter. Thinks he can get a cab at this hour.