heat up
verb
heated up; heating up; heats up
1
: to become warm or hot
The morning started out cold but it heated up quickly.
2
: to become more active, intense, or angry
Their conversation started to heat up.
Competition between the two companies is heating up.
3
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
Levi’s World Cup fever is heating up.
—
Angela Velasquez, Footwear News, 24 Apr. 2026
Based on what Jay Glazer's hearing 2026 NFL Draft is about to heat up in a rather big way.
—Joe Kinsey Outkick, FOXNews.com, 23 Apr. 2026
Temperatures will heat up heading into the weekend, according to the NWS.
—Brayden Garcia, Fort Worth Star-Telegram, 23 Apr. 2026
As midterm election campaigns start heating up, AI and energy will likely take center stage.
—Jacqueline Munis, Fortune, 23 Apr. 2026
See All Example Sentences for heat up
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Angela Velasquez, Footwear News, 24 Apr. 2026
Based on what Jay Glazer's hearing 2026 NFL Draft is about to heat up in a rather big way.
—Joe Kinsey Outkick, FOXNews.com, 23 Apr. 2026
Temperatures will heat up heading into the weekend, according to the NWS.
—Brayden Garcia, Fort Worth Star-Telegram, 23 Apr. 2026
As midterm election campaigns start heating up, AI and energy will likely take center stage.
—Jacqueline Munis, Fortune, 23 Apr. 2026
See All Example Sentences for heat up
Cite this Entry
“Heat up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20up. Accessed 26 Apr. 2026.
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