Um Chin Ah (엄친아) : A shortened phrase meaning ‘Mother’s Friend’s Son.’ They are individuals whom mothers will mention in front of their own children to compare with them (in terms of studies etc). ‘Um Chin Ddal’ is short for ‘Mother’s friend’s daughter’
UnitedCube : The name of the concert held by Cube Entertainment artists.
Unni (언니) : Means big sister. It is used exclusively by girls towards an older girl.
