Synonyms of flare (up)

flare (up) 1 of 2

verb

1

as in to anger

to become very angry

naturally I flared up when he insulted me

Synonyms & Similar Words

• anger
• snarl
• fly into a rage
• hit the roof
• hit the ceiling
• blow up
• fly off the handle
• snap
• have a fit
• flip (out)
• go ballistic
• blow a gasket
• glare
• forget oneself
• explode
• blow one's top
• blow one's stack
• lose one's temper
• blow one's cool
• storm
• lose one's cool
• steam
• tee off
• flare (out)
• rage
• flash
• sputter
• rant
• vituperate
• rave
• fulminate
• foam
• warm
• bristle
• vent
• burst
• glower
• fume
• smolder
• seethe
• burn
• sizzle
• inflame
• madden

Antonyms & Near Antonyms

• calm (down)
• cool (off or down)
• relax
• simmer down
• quiet (down)
• chill out
• hush

2

as in to erupt

to develop suddenly and violently

my allergies always flare up in the spring

Synonyms & Similar Words

• erupt
• explode
• burst (forth)
• blaze (up)
• break out
• flame
• swell
• rocket
• mount
• proliferate
• skyrocket
• multiply
• touch off
• detonate
• wax
• blow up
• snowball
• mushroom
• balloon
• burgeon

flare-up

2 of 2

noun

ˈfler-ˌəp 

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

• flurry
• burst
• outburst
• outbreak
• flare
• eruption
• surge
• spurt
• flutter
• flicker
• recurrence
• increase
• flash
• renewal
• explosion
• boost
• flood
• upswing
• upturn
• recrudescence
• spree
• epidemic
• rush
• pickup
• binge
• commotion
• volley
• paroxysm
• spate
• deluge
• furor
• uproar
• jag

Antonyms & Near Antonyms

• slump
• calm
• doldrums

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

• explosion
• outburst
• eruption
• burst
• blaze
• flare
• flash
• spasm
• gust
• gale
• storm
• flush
• agony
• frenzy
• fit
• paroxysm
• ebullition
• rage
• gush
• transport
• tantrum
• ecstasy
• rapture
• blowup
• delirium
• firestorm
• furor
• grouch

Example Sentences

Recent Examples of flare (up)

Noun

On Thursday, the team agreed to a one-year deal with Deebo Samuel, a longtime member of their offense, who will likely slip into his familiar Z receiver position after a flare-up of Ricky Pearsall’s recurring knee injury. — Matt Barrows, New York Times, 31 July 2026

Tua Tagovailoa, held out of Wednesday’s practice because of a back injury flare-up, threw off to the side. — Daniel Flick, AJC.com, 30 July 2026

Diet is individualized in IBD, and monitoring symptoms could help in knowing if watermelon leads to any problems, especially during a flare-up. — Amber J. Tresca, Verywell Health, 30 July 2026

Several flare-ups near Le Porge and Cap Ferret were brought under control by firefighters. — Billy Stockwell, CNN Money, 28 July 2026