忍垢偷生

rěngòu-tōushēng

(1) [allow oneself to be insulted to remain alive] 忍受耻辱, 苟且活命

妾恨不即死, 止因未与将军一诀, 故且忍垢偷生。 --《三国演义》

(2) 亦作"忍辱偷生"