[ boi-ling ]
/ ˈbɔɪ lɪŋ /


having reached the boiling point; steaming or bubbling up under the action of heat: boiling water.
fiercely churning or swirling: the boiling seas.
(of anger, rage, etc.) intense; fierce; heated.


to an extreme extent; very: August is usually boiling hot; boiling mad.

Nearby words

  1. boiler horsepower,
  2. boiler room,
  3. boiler suit,
  4. boilermaker,
  5. boilerplate,
  6. boiling point,
  7. boiling-water reactor,
  8. boilingly,
  9. boilover,
  10. boink

Origin of boiling

1250–1300; Middle English. See boil1, -ing2

Related formsboil·ing·ly, adverbhalf-boil·ing, adjectivenon·boil·ing, adjective

Origin of boil

1250–1300; Middle English boillen < Anglo-French, Old French boillir < Latin bullīre to bubble, effervesce, boil, verbal derivative of bulla bubble

Synonym study

4. Boil, seethe, simmer, stew are used figuratively to refer to agitated states of emotion. To boil suggests the state of being very hot with anger or rage: Rage made his blood boil. To seethe is to be deeply stirred, violently agitated, or greatly excited: A mind seething with conflicting ideas. To simmer means to be on the point of bursting out or boiling over: to simmer with curiosity, with anger. To stew is to worry, to be in a restless state of anxiety and excitement: to stew about ( or over ) one's troubles. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for boiling

British Dictionary definitions for boiling


/ (ˈbɔɪlɪŋ) /

adjective, adverb

very warma boiling hot day


the whole boiling slang the whole lot


/ (bɔɪl) /



the state or action of boiling (esp in the phrases on the boil, off the boil)

Derived Formsboilable, adjective

Word Origin for boil

C13: from Old French boillir, from Latin bullīre to bubble, from bulla a bubble


/ (bɔɪl) /


a red painful swelling with a hard pus-filled core caused by bacterial infection of the skin and subcutaneous tissues, esp at a hair follicleTechnical name: furuncle

Word Origin for boil

Old English bӯle; related to Old Norse beyla swelling, Old High German būlla bladder, Gothic ufbauljan to inflate

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for boiling
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for boiling


[ boil ]


A painful, circumscribed pus-filled inflammation of the skin and subcutaneous tissue usually caused by a local staphylococcal infection.furuncle

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for boiling


[ boil ]

To change from a liquid to a gaseous state by being heated to the boiling point and being provided with sufficient energy. Boiling is an example of a phase transition.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Idioms and Phrases with boiling


In addition to the idioms beginning with boil

  • boil down
  • boiling point
  • boil over

also see:

  • make one's blood boil
  • watched pot never boils
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.