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
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
Some ingredients in laundry detergents can be harsh on sensitive skin, leading to irritation, allergies, or eczema flare-ups.
—
Christa Joanna Lee, Allure, 4 Mar. 2025
Financial difficulties and health flare-ups while balancing day-to-day responsibilities can be demoralizing at best.
—Diane Winiarski, Forbes, 4 Mar. 2025
In 2000, measles was declared eliminated from the U.S.
Since then, there have been occasional minor flare-ups, usually brought in by international travelers, but by and large, measles outbreaks have been rare.
—Daniel Pastula, The Conversation, 28 Feb. 2025
There was one flare-up of petulance with 6:53 left in the game.
—Edward Lee, Baltimore Sun, 27 Feb. 2025
See All Example Sentences for flare-up
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Christa Joanna Lee, Allure, 4 Mar. 2025
Financial difficulties and health flare-ups while balancing day-to-day responsibilities can be demoralizing at best.
—Diane Winiarski, Forbes, 4 Mar. 2025
In 2000, measles was declared eliminated from the U.S.
Since then, there have been occasional minor flare-ups, usually brought in by international travelers, but by and large, measles outbreaks have been rare.
—Daniel Pastula, The Conversation, 28 Feb. 2025
There was one flare-up of petulance with 6:53 left in the game.
—Edward Lee, Baltimore Sun, 27 Feb. 2025
See All Example Sentences for flare-up
Articles Related to flare-up
Cite this Entry
“Flare-up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/flare-up. Accessed 10 Mar. 2025.
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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