TOPIK | ☆ | A state in which one's effort ends up in vain without any fruit or substance; or such an effort.
| VAIN EFFORT; FOOL'S ERRAND | ESFUERZO EN VANO | EFFORTS DÉPLOYÉS EN VAIN, TRAVAIL INUTILE:
| 白费力，徒劳，白忙，白忙活，徒劳无功 | むだぼね【無駄骨・徒骨】。むだぼねおり【無駄骨折り・徒骨折り】。とろう【徒労】 | 헛수고 | sự tốn công vô ích, sự uổng công | |