失效

shīxiào
  1. to fail
  2. to lose effectiveness

CEDICT

Entry Composition

1 失 shī
  1. to lose
  2. to miss
  3. to fail
=2 效 xiào variant of 傚 xiào
=2 效 xiào to imitate (variant of 效 xiào)
=2 效 xiào variant of 效 xiào
=2 效 xiào
  1. effect
  2. efficacy
  3. to imitate