Smoldering

smol·der also smoul·der  (smldr)

intr.v. smol·dered, smol·der·ing, smol·ders

1. To burn with little smoke and no flame.

2. To exist in a suppressed state: Revolution smoldered in the masses.

3. To show signs of repressed anger or hatred.

n.

Thick smoke resulting from a slow fire.

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[Middle English smolderen, to suffocate, from smolder, smoke, probably alteration of smorther, from Old English smorian, to smoke.]

Thesaurus

Adj.

1.

smoldering - showing scarcely suppressed anger; "her tone was...conversational although...her eyes were smoldering"- James Hensel smouldering angry - feeling or showing anger; "angry at the weather"; "angry customers"; "an angry silence"; "sending angry letters to the papers"