(くすぶ)

くすぶる
verb (godan, intransitive)
to smolder; to linger unresolved
1. to smolder; to smoke without flames
For something to burn slowly with smoke but without flames.
()()がまだ(くすぶ)っている。
The bonfire is still smoldering.
2. to linger; to remain unresolved; to simmer
For problems, dissatisfaction, or feelings to persist without being openly expressed or resolved. Implies underlying tension.
不満(ふまん)社内(しゃない)(くすぶ)っている。
Dissatisfaction is simmering within the company.
3. to stagnate; to remain obscure
To stay in an unfulfilled state without making progress or achieving recognition.
才能(さいのう)があるのに二軍(にぐん)(くすぶ)っている。
Despite having talent, he's languishing in the minor leagues.

TRANSITIVITY: Intransitive verb (自動詞(じどうし)). Transitive counterpart: (くすべ)る or (いぶ)す.

CONJUGATION: Godan verb (-る type)

  • (くすぶ)らない (negative)
  • (くすぶ)ります (polite)
  • (くすぶ)って (te-form)
  • (くすぶ)った (past)

FIGURATIVE USES:

Often used metaphorically to describe:

  • 不満(ふまん)(くすぶ)る - dissatisfaction simmers
  • 問題(もんだい)(くすぶ)る - a problem lingers unresolved
  • (いか)りが(くすぶ)る - anger smolders
  • 才能(さいのう)(くすぶ)る - talent goes to waste

RELATED VOCABULARY:

  • (いぶ)す - to smoke (food), to fumigate
  • (けむり) - smoke
  • 燻製(くんせい) - smoked food

KANJI NOTE:
Also commonly written in hiragana as くすぶる.

REGISTER:
Neutral. Common in both spoken and written Japanese.