腐

Rot

Level 88

How this kanji evolved

Explore each form from the oldest known stage to today.

The character 腐 (fǔ) originally depicted meat 肉 (月 as a radical) placed under a building 府, representing meat rotting or fermenting in storage. Its core meaning evolved to encompass decay, spoilage, and corruption. In ancient China, it conceptually connected physical decomposition with moral decay, giving rise to terms like 腐败 (corruption). The character's structure visually captures the process of organic matter breaking down over time. Arrived in Japan: The character 腐 likely arrived in Japan during the 5th-6th centuries CE along with the broader introduction of Chinese writing systems (kanji) through Buddhist texts and Chinese classics. It appears in early Japanese dictionaries like the 10th-century Wamyō Ruijushō, indicating it was established in Japanese usage by the Heian period.

Reading reference

Onyomi (音読み)

フ

Kunyomi (訓読み)

くさ

Related Vocabulary

陳腐
stale, hackneyed, clichéd
湯豆腐
boiled tofu
豆腐
tofu, bean curd, beancurd
腐る
to rot, to go bad, to decay, to spoil, to fester, to decompose, to turn sour (e.g. milk), to corrode, to weather, to crumble, to become useless, to blunt
腐食
rot, decay, erosion, corrosion, etching, rust, saprophagy
腐敗
decomposition, putrefaction, putrescence, spoilage, corruption, degeneracy, decay, depravity
防腐剤
antiseptic, preservative