boil over

verb

boiled over; boiling over; boils over
Synonyms of boil overnext

intransitive verb

1
: to overflow while boiling
2
a
: to become violent or lose control because of anger
so frustrated he's ready to boil over
b
: to develop into something more violent
Their disagreement finally boiled over into a fight.
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.
Friction between him and the series’ writer, executive producer and showrunner Jez Butterworth reportedly boiled over to a point where the two could no longer work together. Nellie Andreeva, Deadline, 22 May 2026 Frustrations boiled over at Monday night's school board meeting in Pontiac as a consolidation plan to eventually close Owen, Kennedy, and Alcott elementary schools in the next few years passed. Heath Kalb, CBS News, 19 May 2026 Bring to a low boil over medium heat. Lisa Cericola, Southern Living, 17 May 2026 At one point, after Citron cut backdoor for an easy layup off an inbound pass late in the third quarter, White called a timeout as her frustration boiled over. James Boyd, New York Times, 16 May 2026 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 23 May. 2026.

Kids Definition

boil over

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

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