to smoke; to smoulder; to smolder; to sputter
to be sooty; to be smoke-stained
to smoulder (e.g. a dispute); to smolder
to seclude oneself
to live in obscurity; to stay in the same level (of social position, circumstances, etc.)
暖炉の火がまだ燻っている。
The fire in the fireplace is still smouldering.
ストライキ前に従業員の不満が燻ったのだ。
Discontent among employees smouldered before the strike.
才能ある若手選手がベンチで燻るのが残念だ。
It's a shame that a talented young player languishes on the bench.