1
: a sudden outburst or intensification
a flare-up of hostilities
2
: a sudden bursting (as of a smoldering fire) into flame or light
a danger of flare-ups
3
: a sudden appearance or worsening of the symptoms of a disease or condition
an asthmatic flare-up
Synonyms
Examples of flare-up in a Sentence
took medication to prevent a flare-up of her asthma
there's no need for an angry flare-up, as we'll take care of the problem immediately
Recent Examples on the Web
That overweight exposure has already generated banking flare-ups, such as New York Community Bank’s emergency bailout in March.
—
Dylan Sloan, Fortune, 16 May 2024
But getting a flare-up on your face is on another level entirely.
—Alice Oglethorpe, SELF, 10 May 2024
See all Example Sentences for flare-up 
Dylan Sloan, Fortune, 16 May 2024
But getting a flare-up on your face is on another level entirely.
—Alice Oglethorpe, SELF, 10 May 2024
See all Example Sentences for flare-up
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'flare-up.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Flare-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flare-up. Accessed 29 May. 2024.
Copy CitationMedical Definition
flare-up
noun
: a sudden appearance or worsening of the symptoms of a disease or condition
an asthmatic flare-up
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