noun

Usually written with kana alone.
  1. idiot, moron, fool.
  2. trivial matter, folly, absurdity.

adjectival noun or quasi-adjective

Usually written with kana alone.
  1. stupid, foolish, dull, absurd, ridiculous.

noun, adjectival noun or quasi-adjective

Usually written with kana alone. Usu. in compounds.
  1. fervent enthusiast, nut, person singularly obsessed with something.

noun

Abbreviation, usually written with kana alone.
  1. Mactra chinensis (species of trough shell).

Variations

Pronunciation Kanji Kana Is Common
 
 
ばか
鹿
馬鹿 ばか
莫迦
莫迦 ばか
破家 ばか
馬稼 ばか
 
 
バカ