godan verb (-tsu), intransitive verb
blaze up; burn up; flare up
Describes a fire or flame suddenly growing stronger and burning intensely. Can also be used figuratively for emotions such as passion or anger.
乾いた薪が一気に燃え立った。
The dry firewood blazed up all at once.
彼の心に怒りが燃え
Anger flared up in his heart.