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.
Hartnett noted that even with money pouring into stocks, sentiment is not overheated as futures traders continue to raise hedges against potential equity weakness. Jeff Cox, CNBC, 24 Apr. 2026 Beyond its foundational role in farming and hydropower, H2O has become a critical resource in AI data centers, used to cool servers and prevent them from overheating. Sasha Rogelberg, Fortune, 23 Apr. 2026 Some models overheat or turn on by accident. Ashlyn Needham, Southern Living, 23 Apr. 2026 About 1,700 feet above the ground and five miles from the airport, the other engine overheated and also stopped working, the NTSB said. Aaron Cooper, CNN Money, 23 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 29 Apr. 2026.

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