난형난제가 · 난형난제를
neck and neck, hard to tell which is better
Example
두 선수의 실력은 난형난제라 우승을 예측하기 어려워요.
The two players are so evenly matched that the winner is hard to predict.
Word parts
난 hard+형 elder brother+난 hard+제 younger brother
Literally 'hard to call one the elder, hard to call one the younger'.
Good to know
Close in meaning to 막상막하, which is more common in everyday speech.
Related words