heat up

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heat up (third-person singular simple present heats up, present participle heating up, simple past and past participle heated up or (dialectal) het up)

1. To heat, to cause to become hotter.
2. (figurative, by extension, of a situation) To become busier or more exciting or intense.
3. To infuriate or annoy (someone).

• hot up, hot

• “heat up”, in Collins English Dictionary.
• “heat up”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “heat up”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.

• Pahute