1. burned slowly without flame, typically producing smoke
Usage: past tense of smoulder; British spelling
2. showed suppressed anger, hatred, or other strong emotion
Usage: figurative use

Examples

• The campfire smouldered for hours after we put it out.
• Cigarette butts smouldered in the ashtray.
• The ruins smouldered long after the fire was extinguished.
• She smouldered with resentment after the unfair decision.
• His eyes smouldered with barely contained fury.
• The conflict smouldered beneath the surface for years.