This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

Readings

Kana: フ、くさ.る、-くさ.る、くさ.れる、くさ.れ、くさ.らす、くさ.す
Romaji: fu, kusa.ru, -kusa.ru, kusa.reru, kusa.re, kusa.rasu, kusa.su
Kana
Romaji

Meanings

rot, decay, sour

Stroke Diagram

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Kanji Info

Stroke Count:  14
Radical Number:  53
Frequency:  1225
Grade:  8
Skip Pattern:  3-3-11
Korean Reading:  bu
Chinese Reading:  fu3
Unicode:  8150
JIS:  4965

Indexes

Halpern Index: 3162
Nelson Index: 1532
New Nelson Index: 4835
Spahn Hadamitzky Index: 3q11.3
Four Corner Index: 0022.7
Guide to Remembering Index: 1755
Gakken Index: 1400
Daikanwanjiten Index: 29625
Daikanwanjiten Index and Page: 9.0335
Remembering the kanji Index: 1023
Kanji Flashcards Index: 1679
Kodansha Compact Index: 1011
Kanji in Context Index: 1730
1999 Kanji Learners Index: 2022
2013 Kanji Learners Index: 2729
French Remembering the Kanji Index: 1032
Remembering the Kanji 6th Index: 1099
Essential Kanji Index: 1378
Kodansha Kanji Index: 3921
Roo 2001 Kanji Index: 553
Tuttle Kanji Cards Index: 1727

Words

腐る (くさる)
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; to weaken (from lack of practice); to become depraved; to be degenerate; to be morally bankrupt; to be corrupt; to be depressed; to be dispirited; to feel discouraged; to feel down; indicates scorn or disdain for another's action; to lose a bet; to be drenched; to become sopping wet
腐敗 (ふはい)
decomposition; putrefaction; putrescence; spoilage; corruption; degeneracy; decay; depravity
陳腐 (ちんぷ)
stale; hackneyed; cliched
腐れ縁 (くされえん)
(undesirable but) inseparable relationship
腐れ金 (くされがね)
paltry sum (of money)
豆腐 (とうふ)
tofu; bean-curd
腐食 (ふしょく)
corrosion; saprophagy
防腐 (ぼうふ)
preservation; embalmment
腐朽 (ふきゅう)
deterioration; rot
腐植土 (ふしょくど)
humus (soil); mold
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