1. What does it mean?
언팔 shortens 언팔로우, from English 'unfollow.' It means ending your subscription to an account's posts, and 언팔하다 turns it into a verb.
Also written or said as 언팔로우, eonpal
2. The nuance
It is different from blocking. Someone may unfollow to tidy a feed, change interests, or distance themselves; the action alone does not reveal their reason.
3. Examples
“사용하지 않는 계정들을 정리하면서 언팔했어.”
I unfollowed some inactive accounts while tidying up my feed.
“언팔했다고 바로 싸운 사이라고 생각하진 마.”
Don't assume people had a fight just because one unfollowed the other.
Sources
References support the meaning and usage. Example sentences are written for NoCapWiki.