Definition of boil up phrasal verb from the Oxford Advanced Learner's Dictionary


boil up

 phrasal verb
phrasal verb Anger
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Phrasal Verbs
if a situation or an emotion boils up, it becomes dangerous, worrying, etc. I could feel anger boiling up inside me. See related entries: Anger
to heat a liquid or some food until it boils She boiled up a large pan of water.
See the Oxford Advanced American Dictionary entry: boil up