smoldering
UK: ˈsməʊldərɪŋ | US: ˈsmoʊldərɪŋ
adj. burning slowly without flame, often with smoke
adj. (of emotions) persistent and suppressed but intense
vi. present participle of "smolder": to burn sluggishly or inwardly
The word "smolder" originates from Middle English smolderen, meaning "to suffocate with smoke," derived from Proto-Germanic smul- (related to smoke or smudge). The modern sense of slow, flameless combustion emerged in the 16th century, later metaphorically extended to emotions (e.g., "smoldering anger"). The suffix -ing marks its participial form.
The campfire left smoldering embers overnight.
Her smoldering gaze hinted at unspoken frustration.
The conflict smoldered for years before erupting.
A smoldering cigarette caused the forest fire.
His smoldering resentment affected their relationship.