noun, noun which may take the genitive case particle 'no'
A derogatory term for a stupid person, literally 'brainless'. Used as a noun or with の to modify another noun.
あんな脳無しの言うことを真に受けるな。
Don't take what that idiot says seriously.
彼は脳無しだから、何を言っても無駄だ。
He's a moron, so it's useless no matter what you say.
Standard kanji spelling.
Alternate spelling using okurigana なし instead of 無し.
Compound of 脳 (のう, 'brain') + 無し (なし, 'without'), literally 'brainless'.