Synonyms of flare up in English:

flare up


See UK English definition of flare

phrase

1‘the wooden houses flared up like matchsticks’

SYNONYMS
burn, blaze, be ablaze, be alight, be on fire, be in flames, flame, be aflame
blaze up, burn up, go up, go up in flames
literary be afire
archaic be ardent

2‘the injury flared up again at the end of the year’

SYNONYMS
recur, reoccur, reappear
break out, burst out, start suddenly, burst forth, erupt

3‘I flared up at him right off’

SYNONYMS
lose one's temper, lose control, become enraged, go into a rage, fly into a passion, fly into a temper, boil over, boil over with rage, fire up, go berserk, throw a tantrum, explode
informal blow one's top, fly off the handle, lose one's cool, get mad, go crazy, go wild, go bananas, hit the roof, go through the roof, go up the wall, see red, go off the deep end, blow a fuse, blow a gasket, lose one's rag, go ape, burst a blood vessel, flip, flip one's lid, foam at the mouth, get all steamed up, get worked up, have a fit
British informal go spare, go crackers, do one's nut, get one's knickers in a twist, throw a wobbly
North American informal flip one's wig, blow one's lid, blow one's stack, have a cow, go postal, have a conniption fit
vulgar slang go apeshit
ANTONYMS

keep one's temper, remain calm