Etymology
Advertisement

barmy (adj.)

1530s, "frothing, covered with barm;" see barm + -y (2). Figurative sense of "excited, flighty, bubbling with excitement" is from c. 1600. Meaning "foolish" (1892) is probably an alteration of balmy (q.v.).

Others are reading

Advertisement
Advertisement
Definitions of barmy

barmy (adj.)
marked by spirited enjoyment;
Synonyms: zestful / yeasty / zesty
barmy (adj.)
informal or slang terms for mentally irregular;
Synonyms: balmy / bats / batty / bonkers / buggy / cracked / crackers / daft / dotty / fruity / haywire / kooky / kookie / loco / loony / loopy / nuts / nutty / round the bend / around the bend / wacky / whacky
From wordnet.princeton.edu