heat up

phrasal verb

heated up; heating up; heats up

: to become warm or hot

The morning started out cold but it heated up quickly.

: to become more active, intense, or angry

Their conversation started to heat up.

Competition between the two companies is heating up.

heat (something) up or heat up (something) : to cause (something) to become warm or hot

Could you heat up the vegetables, please?

Examples of heat up in a Sentence

Recent Examples on the Web

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Capitalize on high interest rates: Best current CD rates Alternatively, Trump’s initiatives could more emphatically reignite inflation while the economy grows sturdily or possibly heats up. —

Paul Davidson, USA TODAY, 27 Jan. 2025 Experts say Trump’s moves to step away from global climate action, ramp up domestic oil and gas production and remove incentives for electric vehicles are worrisome as the planet continues to heat up. —

Baltimore Sun Staff, Baltimore Sun, 27 Jan. 2025 Allow to rest and further dry out while oven heats up. —

Cathy Thomas, Orange County Register, 27 Jan. 2025 If the market for Arenado heats up, the Red Sox could simply outbid other teams by taking on more of his salary. —

Gordon G. Chang, Newsweek, 25 Jan. 2025 See all Example Sentences for heat up