godan verb (-ru), intransitive verb
blaze; burn brightly; burn fiercely
Describes a fire burning intensely and vigorously, often with large flames. Can also be used metaphorically for strong emotions or passions.
暖炉の火が燃え盛っている。
The fire in the fireplace is blazing.
彼の心には復讐の炎が
The flames of revenge were burning fiercely in his heart.