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

腐る

Reading

Kana: くさる
Romaji: kusaru
Kana
Romaji

Definitions

v5r
vi
1

to rot; to go bad; to decay; to spoil; to fester; to decompose; to turn sour (e.g. milk)

2

to corrode; to weather; to crumble

3

to become useless; to blunt; to weaken (from lack of practice)

4

to become depraved; to be degenerate; to be morally bankrupt; to be corrupt

5

to be depressed; to be dispirited; to feel discouraged; to feel down

See also: 気が腐る (reading きがくさる)
suf
v5r
6

indicates scorn or disdain for another's action

(Kansai-ben)
Note: after the -masu stem of a verb
Note: word usually written using kana alone
See also: やがる
v5r
vi
7

to lose a bet

Note: archaism
8

to be drenched; to become sopping wet

Note: archaism

Kanji

Readings: フ、 くさ.る、 -くさ.る、 くさ.れる、 くさ.れ、 くさ.らす、 くさ.す
Meanings: rot, decay, sour

Example Sentences

牛乳(ぎゅうにゅう)(くさ)った。
➥The milk has gone bad.
Full Entry➤
(きむ)(くさ)るほどある。
➥He is rolling in riches.
Full Entry➤
(にく)(くさ)ってしまった。
➥The meat has gone bad.
Full Entry➤
(はや)()れの(はや)(くさ)り。
➥Soon ripe, soon rotten.
Full Entry➤
その果物(くだもの)(くさ)った。
➥The fruit went bad.
Full Entry➤
この(にく)(くさ)っている。
➥This meat has gone bad.
Full Entry➤
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