godan verb (-ru), intransitive verb
burn fiercely; be aflame; be ardent
Describes a fire or passion burning intensely and uncontrollably. Often used metaphorically for strong emotions like anger, zeal, or love.
彼の心には復讐の炎が燃えたぎっていた。
The flames of revenge burned fiercely in his heart.
燃えたぎるような恋に落ちた。
I fell into a passionate, burning love.