na-adjective, noun
Archaic word for foolishness or stupidity; not used in modern Japanese. Found only in classical texts.
古典文学では「愚蠢」という語が愚かさを表すのに使われた。
In classical literature, the word 愚蠢 was used to express foolishness.
The exact derivation is uncertain; the kanji 愚 (foolish) and 蠢 (wriggle, stupid) combine to convey foolishness. The word is obsolete in modern Japanese.