Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun flare-up

1 sense of flare-up

Sense 1
outburst, burst, flare-up -- (a sudden intense happening; "an outburst of heavy rain"; "a burst of lightning")
       => happening, occurrence, occurrent, natural event -- (an event that happens)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb flare-up

2 senses of flare up

Sense 1
flare up -- (ignite quickly and suddenly, especially after having died down; "the fire flared up and died down once again")
       => ignite, light -- (cause to start burning; subject to fire or great heat; "Great heat can ignite almost any dry matter"; "Light a cigarette")

Sense 2
erupt, irrupt, flare up, flare, break open, burst out -- (erupt or intensify suddenly; "Unrest erupted in the country"; "Tempers flared at the meeting"; "The crowd irrupted into a burst of patriotism")
       => intensify, deepen -- (become more intense; "The debate intensified"; "His dislike for raw fish only deepened in Japan")