燻(くすぶ)るto smoke, to smoulder, to smolder, to sputter, , to be sooty, to be smoke-stained, to smoulder (e.g. a dispute), to seclude oneself, to live in obscurity, to stay in the same level (of social position, circumstances, etc.)

う-verb (る), Intransitive verb

1. 1.

   to smoke, to smoulder, to smolder, to sputter

   Usually written using kana alone

2. 2.

   to be sooty, to be smoke-stained

   Usually written using kana alone, Only applies to くすぶる, ふすぶる

3. 3.

   to smoulder (e.g. a dispute), to smolder

   Usually written using kana alone, Only applies to くすぶる

4. 4.

   to seclude oneself

   Usually written using kana alone, Only applies to くすぶる, ふすぶる

5. 5.

   to live in obscurity, to stay in the same level (of social position, circumstances, etc.)

   Usually written using kana alone, Only applies to くすぶる