godan verb (-ru), intransitive verb
blow harder and harder; blow with increasing intensity
Describes wind or a storm that gradually intensifies. Often used in literary or descriptive contexts.
夜が更けるにつれて、風が吹き募ってきた。
As the night deepened, the wind blew harder and harder.
吹き募る雪の中を、彼
He kept walking alone through the increasingly fierce snowstorm.