to be the bad guy; to do the tough but necessary things (such as being straightforward and telling someone off)
Definitions (粵典–words.hk)
動詞
平息紛爭;喺彼此之間有衝突嘅人中間做調停。 Literally "to be the ugly person", figuratively "to play the peacemaker", "to settle a quarrel", "to act as an intermediary and potentially face hostility as a result".
佢兩個撐 到恆,唯有我做醜人搞掂 佢啦。
佢两个撑 到恒,唯有我做丑人搞掂 佢啦。
keoi5 loeng5 go3 caang3 dou3 hang4, wai4 jau5 ngo5 zou6 cau2 jan2 gaau2 dim6 keoi5 laa1. The two of them are being so standoffish. I guess I'll have to be the peacemaker.