nutjob

or nut job

[ nuht-job ]

noun

, Slang.

1. a crazy or eccentric person; nutcase; nut:

   When Tom gets excited he can act like a real nutjob.

Word History and Origins

Origin of nutjob¹

First recorded in 1970–75; nut (in the slang sense “eccentric, crazy person”) + job ¹ (in the slang sense “an example of a type”)

Example Sentences

Even the most wacked-out nutjob has to learn how to be a lunatic, and always has.

From The Daily Beast

This isn't about a nearly year-old Sarah Palin map; it's about a lone nutjob who doesn't value human life.

From The Daily Beast