- work one's tail off
to work very hard for a long period of time 뼈빠지게 일하다.
EX) Have you worked your tail off to advance your career but still don't have the salary to show for it? - erroneous [ɪˈrəʊniəs]
incorrect
EX) many of us hold an erroneous assumption about leadership. - insular
ignorant of or uninterested in cultures, ideas, or peoples outside one's own experience.
EX) English people can be very insular and believe that British/Western culture is the only relevant culture.