진퇴양난이 · 진퇴양난을
a dilemma, being stuck between a rock and a hard place
Example
그는 진퇴양난에 빠져 어떻게 해야 할지 몰랐어요.
He was stuck in a dilemma and didn't know what to do.
Word parts
진 advance+퇴 retreat+양 both+난 difficult
Literally 'advancing and retreating are both hard'.
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