미련.
lingering attachment [affection]; regret; reluctance to give (it, a person) up
ex: 미련이 (남아) 있다.
be still attached (to); have a lingering affection [love] (for); have a lingering regret (for the past); feel (some) regret; think regretfully (of).
// from 연애의 발견 [2014].
