自卑

zìbēi
  1. to have low self-esteem
  2. to abase oneself

CEDICT

Entry Composition

1 自 zì
  1. (bound form) self; oneself
  2. from; since
  3. naturally; as a matter of course
2 卑 bēi
  1. low
  2. base
  3. vulgar
  4. inferior
  5. humble