smolder
/ˈsmoʊldər/Definitions
1. verb
to burn slowly and steadily, often with a smoky flame
“The fire smoldered in the fireplace all night.”
2. verb
to feel or show a strong but often suppressed emotion
“She smoldered with anger at the injustice.”
3. noun
a slow and smoky fire
“The smolder was still burning in the ashes.”
4. noun
a person who gives off a sense of quiet intensity or suppressed emotion
“He’s been known as a smolder for years, always seeming to be on the verge of exploding.”