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.
Advertisement Xi’s invocation of Thucydides’ Trap comes at a time when tensions between the rival superpowers could boil over on any of a number of issues, from trade to AI to Taiwan. Chad De Guzman, Time, 15 May 2026 Instead of frustration boiling over, Luzardo ended the inning with a Jarren Duran popout. Charlotte Varnes, New York Times, 15 May 2026 Bring just to a boil over medium, stirring constantly until sugar is dissolve. Midwest Living, 14 May 2026 Last night, during Game 4, Wembanyama’s frustration boiled over. Andrew Greif, NBC news, 11 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

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Cite this Entry

“Boil over.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boil%20over. Accessed 16 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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