unfaithful

形容词 unfaithful:

1. not true to duty or obligation or promises
2. having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend
3. having the character of, or characteristic of, a traitor
   同义词：faithless, traitorous, treasonable, treasonous
4. not trustworthy

1. He could not divest himself of the suspicion that his wife was being unfaithful.
   他无法消除自己的疑心，总觉得妻子不忠。
2. The discovery that her husband was unfaithful to her was a rude (ie shocking) awakening.
   她发觉丈夫对自己不忠而猛醒。
3. He is in a sense being unfaithful to his wife.
   在某种意义上他对妻子不忠。
4. Her husband is unfaithful to her.
   她的丈夫对她不忠。
5. People do not like an unfaithful child.
   人们不喜欢不诚实的孩子。