보슬보슬 + 내리다 / 오다
drizzling softly, misting (fine rain)
Example
아침부터 봄비가 보슬보슬 내려요.
A fine spring rain has been drizzling since morning.
Word parts
의태어 (manner word) for fine, soft rain. The dark-vowel pair 부슬부슬 sounds a little heavier and gloomier.
Good to know
A light drizzle like this is called 보슬비. The opposite feel is 주룩주룩 for heavy rain.
Related words