bubble up, intumesce -- (move upwards in bubbles, as from the effect of heating; also used metaphorically; "Gases bubbled up from the earth"; "Marx's ideas have bubbled up in many places in Latin America")
swell, swell up, intumesce, tumefy, tumesce -- (expand abnormally; "The bellies of the starving children are swelling")
(TTS Sound)
