发愤忘食

Explanation: To study or work, and even forgot to eat. Very hard to describe. 　　Usage: Partial official; as Complement, attributive; very hard to describe 　　Source: Pre Confucius "The Analects of Confucius described the": "Gassy forgot to eat, music to the lotus, I wonder if old age is coming on." 　　Examples: Either way ~ it better to do something to go by you. (Qing, Culture and Sport "Heroic Biography" Thirty-fourth back) Thesaurus:  ice, keep one's gravity, for what they are, one's true character as the real face of Lushan Mountain, openminded, Enough to fulfill on the spot, Lushan Mountain truncation, Lushan Mountain appearance, serious face and words, Cutting the wall to steal light, Measle Yingxue, Cited light through the partition, Zheng-Yan Li Yan Antonym Group:  Zuozhangzuoshi, Zuozhangzuozhi, Zuozhangzuozhi, crave for greatness and success, bashful, camp, alert assumption, mincing, strive for social recognition; fish for fame and compliments, Gouzhi guiltless, behave like thieves and prostitutes; the male are robbers and the female harlots, Daoshiqiming, Daomingqieyu, Line with Gouzhi, Fishing name deceive