만시지탄이 · 만시지탄을
regret that it is too late, a belated lament
Example
지금 대책을 세워도 만시지탄이라는 비판이 있어요.
Critics say that even if measures are taken now, it's too little, too late.
Word parts
만 late+시 time+지 of+탄 lament
Literally 'a sigh over the lateness of the hour'.
Good to know
Pattern: 만시지탄의 감이 있다 'it feels belated', common in editorials.