B1
Expression
boil up
To heat a liquid until it boils. Figuratively, it describes a negative emotion, like anger or anxiety, that starts to build inside someone.
Meaning
To heat a liquid until it boils. Figuratively, it describes a negative emotion, like anger or anxiety, that starts to build inside someone.
Meaning
To heat a liquid until it boils. Figuratively, it describes a negative emotion, like anger or anxiety, that starts to build inside someone.
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