loony
1. [ adjective ] informal or slang terms for mentally irregular
Synonyms: barmy bats batty bonkers buggy cracked crackers daft dotty fruity haywire kooky kookie loco loopy nuts nutty wacky balmy
Related terms: insane
2. [ adjective ] informal or slang terms for mentally irregular
Synonyms: balmy barmy bats batty bonkers buggy cracked crackers daft dotty fruity haywire kookie kooky loco loopy nuts nutty round_the_bend wacky whacky around_the_bend
Examples:

"it used to drive my husband balmy"

Related terms: insane
3. [ noun ] (medicine,psychology) someone deranged and possibly dangerous
Synonyms: looney weirdo crazy
Related terms: lunatic
Similar spelling:   loon
  Lonny
  Loney
  Lon
  Lowney
  looney
  Lown
  Loni
  lone
  Lona
  loin
  loan
  lowan
  Lonna
  lohan
  loamy
  Lonnie
  Louann
  Loewen