Archaic word for foolishness or stupidity; not used in modern Japanese. Found only in classical texts.
In classical literature, the word 愚蠢 was used to express foolishness.
Common casual word for 'fool' or 'idiot', much stronger and more colloquial than 愚蠢.
Archaic kanji form; the word is obsolete in modern Japanese.
Variant kanji form, also archaic.
The exact derivation is uncertain; the kanji 愚 (foolish) and 蠢 (wriggle, stupid) combine to convey foolishness. The word is obsolete in modern Japanese.