1
as in to anger
to become very angry
naturally I flared up when he insulted me
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
1
as in flurry
a sudden and usually temporary growth of activity
took medication to prevent a flare-up of her asthma
Synonyms & Similar Words
Antonyms & Near Antonyms
2
as in explosion
a sudden intense expression of strong feeling
there's no need for an angry flare-up, as we'll take care of the problem immediately
Synonyms & Similar Words
Example Sentences
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Recent Examples of flare (up)
Los Angeles Times,
20 June 2026
The lawsuit is the latest flare-up between the city’s powerful teachers union and largest charter school network, and the first of Mayor Mamdani’s administration.
—
Cayla Bamberger,
New York Daily News,
16 June 2026
Another flare-up in tensions in Iran is exacerbating the negative sentiment.
—
Leonie Kidd,
CNBC,
10 June 2026
The American Lung Association echoes that guidance, noting that artificial scents trigger flare-ups for people with asthma and COPD alike.
—
Kansas City Star,
8 June 2026
See All Example Sentences for flare (up)
Noun
The multiday effort has been full of challenges for firefighters with fiery flare-ups.
—
Los Angeles Times,
20 June 2026
The lawsuit is the latest flare-up between the city’s powerful teachers union and largest charter school network, and the first of Mayor Mamdani’s administration.
—
Cayla Bamberger,
New York Daily News,
16 June 2026
Another flare-up in tensions in Iran is exacerbating the negative sentiment.
—
Leonie Kidd,
CNBC,
10 June 2026
The American Lung Association echoes that guidance, noting that artificial scents trigger flare-ups for people with asthma and COPD alike.
—
Kansas City Star,
8 June 2026
See All Example Sentences for flare (up)
Recent Examples of Synonyms for flare (up)
Verb
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But Schnur said the governor likely also has concerns about angering one of his biggest backers.
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Meanwhile, Daemon, angered that his wife/niece is mad at him for orchestrating the brutal murder of a child, goes to the cursed castle of Harrenhal to claim it for their side — or perhaps to claim it for himself.
Verb
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Manager Dave Roberts, who looked down at his card when the throw was in the air, was already thinking through extra innings when the crowd erupted again.
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The current unrest first erupted in May after Paz cut long-standing fuel subsidies to shrink the deficit.
Noun
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Even before the latest flurry of mixed signals, the industry had doubts.
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The Angels recalled infielder Christian Moore from Triple-A Salt Lake among a flurry of moves.
Noun
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Moscow’s mayor said air defenses shot down nearly 200 drones, as videos circulating on social media showed explosions and smoke billowing across the Russian capital.
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The fire reached an ammonia line, triggering several small explosions and a dramatic image of flames shooting through the building roof as crews evacuated the area to avoid the fumes.
Verb
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In fact, none of them are shy about their glee, leaving Kayda crying, Trinity snarling, and Melanie calculating.
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Traffic was snarled on Interstate 70 and other key arteries because of some combination of vague signage on parking passes or apps, accidents earlier in the afternoon, the lack of dedicated lanes for the bus system — why oh why couldn’t that be achieved in the master plan?
Verb
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Online sales boomed and Nekhala said his business exploded.
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Software engineers have arguably been the first class of workers to see the technology upend their jobs, as programming tools like Anthropic’s Claude Code and OpenAI’s Codex have exploded in popularity.
Noun
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Comprising 1,650 radio dishes, the telescope aims to study black holes, spinning dead stars and radio bursts from deep space.
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The concept of producing electricity from ion movement is not new, and as Kim explained, electric eels use a similar principle in nature, generating electrical bursts by controlling ion flow across specialized cells known as electrocytes.
Noun
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Bryson Stott's three-run homer highlighted Philadelphia's eight-run outburst in the ninth inning and the Phillies rallied to beat the Washington Nationals 14-9 on Tuesday night.
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The symptoms often look different in dads—anger or sudden outbursts, irritability and substance misuse, for example.
Cite this Entry
“Flare (up).” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/flare%20%28up%29. Accessed 27 Jun. 2026.
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