1) Burn 2) Smolder 1) Burn feebly 2) Burn inwardly 3) Burn slowly 4) Burn without a flame 5) Fire 6) Repress rage 7) To choke 8) To smother 9) To suffocate 
• (n.) Smoke; smother. • (v. i.) To burn and smoke without flame; to waste away by a slow and supressed combustion. • (v. t.) To smother; to suffocate; to choke. • (v. i.) To exist in a state of suppressed or smothered activity; to burn inwardly; as, a smoldering feud. • (v. i.) See Smolder.
Smoul'der intransitive verb See Smolder . 
[n] - a smouldering fire
smolder noun a fire that burns with thick smoke but no flame; `the smoulder suddenly became a blaze`