Beating a dead horse
tɕuqɯnmɐɾe tʃhɛtɕiqtɕiɫhɐdɐ dʒuːdʒjuːn meə kiːdʒɪtdʒɪlhɑːdə
In Korean 죽은 말에 채찍질하다 (jugeun mare chaejjitjilhada)
This idiom is a direct translation, emphasizing the futility of continuing an action.
Example
"더 이상 논쟁하는 것은 의미가 없어요, 죽은 말에 채찍질하는 것과 같아요. (Deo isang nonjaenghaneun geoseun uimiga eopseoyo, jugeun mare chaejjitjilhaneun geotgwa gatayo.)"
