flare up v ignite quickly and suddenly, especially after having died down v erupt or intensify suddenly Synonym(s) erupt irrupt flare break open burst out
News & Articles flare up Doce Fire 40% contained, some evacuations lifted The Doce Fire is currently 40 percent contained, but heat still remains on the fire perimeter with potential to flare up. June 22, 2013 - CBS 5 Phoenix