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.

Things heat up as the Traitors do their best to keep the teams from winning the prize of up to $250,000. —

Angel Saunders, People.com, 5 Nov. 2024 But monthly data show that the mansion-tax market is heating up. —

Jack Flemming, Los Angeles Times, 4 Nov. 2024 The afternoon heats up with Bears at Cardinals and Lions at Packers, the latter of which will determine first place in the competitive NFC North. —

Tim Van Straten, Newsweek, 2 Nov. 2024 With a range of hundreds of meters to several kilometers, the laser heats up the target’s shell in vulnerable areas, including its engine or warhead, until the projectile collapses. —

Nadeen Ebrahim, CNN, 1 Nov. 2024 See all Example Sentences for heat up