Let's learn about "말짱 도루묵이다"

말짱 도루묵이다 : [=말짱 꽝이다•힘쓴 결과가 헛된 결과가 되다] the result of one's labors is in vain; come to naught

ex)

A. 삼계탕의 국물이 아무리 맛있어도 닭맛이 별로이면 말짱 도루묵이다 : No matter how delicious the soup of samgyetang is, if the chicken taste is not good, It is not delicious

B. 맞아요. 이건 국물도 끝내주지만, 닭의 고기맛도 너무 너무 좋아요 : Yes, the soup is amazing, but the chicken's meat tastes so good

* 도루묵 : (1) sailfin sandfish (2) [=헛된 결과] a fruitless result

- 한 달간의 금연이 말짱 도루묵이 되었다 : One month of not smoking went completely down the drain

* 헛된 : [=공허한] empty; [=부질없는] vain, fruitless, useless, futile; [=보람 없는] idle; [=허황된] false

* 헛되다 : [=공허하다] be empty; [=부질없다] be in vain, be fruitless, be useless, be futile; ([=보람 없다] be idle; [=허황되다] be false

- 헛된 희망을 품다 : have false hope

* 말짱 : [this often used with words of negative meaning] completely

- 말짱 꽝이다 : It's the worst; come to naught

* 끝내준다 : That's awesome