殚精竭虑
Traditional form:
殫精竭慮
Pinyin (reading):
dānjīngjiélü
Definitions:
- to exhaust one's thoughts and ingenuity (idiom); to think sth through thoroughly
- to rack one's brains
- to leave no stone unturned
Characters:
- 殚 - utmost, entirely, quite; to use up
- 精 - essence, germ, spirit
- 竭 - to exhaust; to put forth great effort
- 虑 - anxious, concerned, worried
Traditional characters: