godan verb (-tsu), intransitive verb
to boil; to come to a boil
Describes liquid reaching a rolling boil; often used for cooking or hot springs.
鍋の湯が煮え立ったら、麺を入れてください。
When the water in the pot comes to a boil, please add the noodles.
godan verb (-tsu), intransitive verb
to seethe with rage
Figurative use; describes intense anger boiling inside someone. Often used with 腹 or 心.
彼の無責任な態度に、腹が煮え立った。
I was seething with anger at his irresponsible attitude.