01: A mentally unstable person who acts carelessly; 5150.
02: A person who is not of sound mind.
03: A crazy, nutty, eccentric person.
Synonyms for head case
On this page, you will find 30 slang terms related to head case. Some of the top words include: CrazyCooter, Dumbfuck, ree ree, bug (also called 'bed bug'), Dip Shit, and 25 more.