Verb intumesce has 2 senses
  1. 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"
    --1 is one way to surface, come up, rise up, rise
    Sample sentence:
    Something ----s
  2. swell, swell up, intumesce, tumefy, tumesce - expand abnormally; "The bellies of the starving children are swelling"
    --2 is one way to expand
    Derived forms: noun intumescency1, noun intumescence1
    Sample sentence:
    Something ----s
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