flareup

[ flair-uhp ]
/ ˈflɛərˌʌp /

noun

a sudden flaring up of flame or light.
a sudden outburst or intensification, as of anger or tensions.
a sudden outbreak of violence, disease, or any other condition thought to be quelled, checked, or inactive.

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Origin of flareup

First recorded in 1830–40; noun use of verb phrase flare up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for flareup

flare-up

noun

a sudden burst of fire or light
informal a sudden burst of emotion or violence

verb flare up (intr, adverb)

to burst suddenly into fire or light
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

Idioms and Phrases with flareup

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.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.