정이 · 정을
jeong, affection, warm attachment, emotional bond
Example
같이 오래 일하다 보니 동료들과 정이 많이 들었어요.
After working together so long, I grew very attached to my coworkers.
Word parts
정 feeling
A key Korean concept: a warm bond that grows through time and shared experience.
Good to know
정이 들다 = to grow attached; 정이 떨어지다 = to be put off by someone.