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  • flare-up
    flare-up
    noun
    a sudden burst of fire or light
  • flare up
    flare up
    Suddenly become angry, as in She flared up at the slightest provocation. This metaphoric expression, dating from the mid-1800s, transfers a sudden burst of flame to sudden rage.
Synonyms

flare-up

British  

noun

  1. a sudden burst of fire or light

  2. informal a sudden burst of emotion or violence

"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

verb

  1. to burst suddenly into fire or light

  2. informal to burst into anger

"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
flare up Idioms  
  1. Suddenly become angry, as in She flared up at the slightest provocation. This metaphoric expression, dating from the mid-1800s, transfers a sudden burst of flame to sudden rage.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

"It's a huge area and there could be a flare-up again at any moment," deputy fire department spokesman Yiannis Artopios had earlier told state TV ERT.

From Barron's Aug. 4, 2026

Swiss inflation fell in July despite a rebound in global energy prices following a flare-up of conflict in the Middle East, which has driven up inflation in other parts of Europe.

From The Wall Street Journal Aug. 3, 2026

Crude oil prices leapt more than four percent as the fresh Middle East flare-up revived fears over global supplies usually shipped through the pivotal Strait of Hormuz.

From Barron's Jul. 29, 2026

As the smoke eases, firefighters then move into the forest on foot to try and contain the latest flare-up.

From BBC Jul. 29, 2026

The next flare-up came one evening in the sitting-room.

From "Matilda" by Roald Dahl

California’s struggling wine industry says it expects to take another hit as trade tensions between the U.S. and Canada flare up again.

From Los Angeles Times Aug. 26, 2026

But Apple’s “go-slow” strategy comes in handy on days when investor concerns about AI overspending flare up, insulating the stock from downturns that hit the semiconductor space.

From MarketWatch Aug. 19, 2026

Katie described how Yann would "flare up" if he was in a room with any of his allergens.

From BBC Jun. 13, 2026

Officials in the Middle East believe there is a significant chance that war will flare up again—possibly with even greater intensity.

From The Wall Street Journal Apr. 8, 2026

She watched the parchment twist, blacken, and flare up.

From "A Clash of Kings" by George R.R. Martin

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