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.
But if inflation plateaus or climbs, policymakers could pause or even raise rates again, particularly if the economy shows signs of overheating. Angelica Leicht, CBS News, 11 Dec. 2025 Markets which had been relatively affordable, on the outskirts of big cities like Miami and Orlando, became overheated during the pandemic, with home prices reaching beyond what many locals could afford. Giulia Carbonaro, MSNBC Newsweek, 11 Dec. 2025 Federal officials said that INIU had received 15 reports of power banks overheating and 11 reports of fires resulting in three minor burn injuries. Fernando Cervantes Jr, USA Today, 8 Dec. 2025 The puffer vest garment is insulated enough to keep your core warm, while allowing for unrestricted arm freedom and airflow — two things that are important for those who are easily overheated and overstimulated. Kayla Blanton, PEOPLE, 8 Dec. 2025 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

Browse Nearby Words

Cite this Entry

“Overheat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/overheat. Accessed 16 Dec. 2025.

More from Merriam-Webster on overheat

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!