boil over

verb

boiled over; boiling over; boils over

intransitive verb

1
: to overflow while boiling
2
: to become so incensed as to lose one's temper
boilover noun

Examples of boil over 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.
Tensions are set to boil over, leading to a confrontation between the two outside the ring. Andrew Ravens‎, MSNBC Newsweek, 13 Oct. 2025 Tua Tagovailoa’s frustrations with the Miami Dolphins’ performances through six weeks of the 2025 NFL season appeared to boil over following a 29-27 loss to the Los Angeles Chargers. Ryan Gaydos, FOXNews.com, 13 Oct. 2025 In response to the scourge of mass shootings that have helped define the 21st century in the United States, lawmakers in California passed a landmark red-flag law that would allow authorities to disarm those whose threatening behavior might boil over into deadly violence. Robert Salonga, Mercury News, 13 Oct. 2025 The oil market has been on edge repeatedly over the past two years about the risk of the Gaza war boiling over into a regional conflict that could disrupt crude supplies. Spencer Kimball,lisa Kailai Han, CNBC, 10 Oct. 2025 See All Example Sentences for boil over

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of boil over was in the 15th century

Browse Nearby Words

Cite this Entry

“Boil over.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boil%20over. Accessed 15 Oct. 2025.

Kids Definition

boil over

verb
1
: to overflow while boiling
2
: to become so angry as to lose one's temper

More from Merriam-Webster on boil over

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!