loony

loo-ny · adjective

imported

Definitions

adjective

  1. 1.

    (Informal) Crazy, foolish, or eccentric.

  2. 2.

    (As noun) A crazy or eccentric person.

Phrases & expressions

  • •
    loony bin — (Offensive slang) A psychiatric hospital
  • •
    loony tunes — Crazy, absurd (from the cartoon series)

Related words

Antonyms: rational, sane, sensible
See also: crazy, insane, lunatic, mad
Synonyms: bonkers, crazy, insane, mad, nutty

Etymology

Shortened form of lunatic, from Latin lunaticus ("moonstruck"), from luna ("moon"). The belief was that the moon could cause madness.