푸념이 · 푸념을
grumbling, complaining; a lament over one's lot
Example
친구는 만날 때마다 회사 일로 푸념을 늘어놓아요.
Every time we meet, my friend goes on and on complaining about work.
Word parts
Native Korean; originally the words a shaman spoke in a ritual, later 'venting one's grievances'.
Good to know
Common collocations: 푸념을 늘어놓다 (go on grumbling) and 푸념을 듣다 (listen to someone vent).