overheat

verb

over·​heat ˌō-vər-ˈhēt How to pronounce overheat (audio)
overheated; overheating; overheats
Synonyms of overheatnext

transitive verb

1
: to heat to excess
2
: to stimulate or agitate unduly

intransitive verb

: to become heated beyond a safe or desirable point

Examples of overheat in a Sentence

I overheated the food in the microwave. Be careful not to overheat the engine.
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.
So, instead of relying on air cooling, the use of oil helps remove heat faster, allowing higher output without overheating. Christopher McFadden, Interesting Engineering, 12 Apr. 2026 The shorter hem falls at the shins, keeping you comfortable without overheating. Nicol Natale, PEOPLE, 10 Apr. 2026 It’s made for everything from seaside strolls to city days and won’t leave you overheating. Rosie Marder, Travel + Leisure, 10 Apr. 2026 It’s made of breathable cotton, while a lightweight filling adds warmth without overheating. Jacqueline Tempera, Better Homes & Gardens, 9 Apr. 2026 See All Example Sentences for overheat

Word History

First Known Use

14th century, in the meaning defined at transitive sense 1

Time Traveler
The first known use of overheat was in the 14th century

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Cite this Entry

“Overheat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overheat. Accessed 15 Apr. 2026.

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