bubble - definition and synonyms

verb [intransitive] 

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present tense
present participlebubbling
past tensebubbled
past participlebubbled
  1. 1
    if liquid bubbles, bubbles form and move in it

    When the sauce starts to bubble, remove it from the heat.

    A pot of soup was bubbling away on the stove.

  2. 2
    if something such as an emotion or violence bubbles away, it continues to exist but is not noticeable
    bubble away/beneath:

    Violence is bubbling beneath the surface.