dishonourable

形容词 dishonourable:

1. lacking honor or integrity; deserving dishonor
   同义词：dishonorable
2. not adhering to ethical or moral principles
   同义词：base, dishonorable, immoral, unethical
3. morally unacceptable
   同义词：dishonorable

1. The officer was reduced in rank for dishonourable action.
   那个军官由于不光彩的行径而被降职。
2. He is ashamed for his former dishonourable action.
   他对他以前不光彩的行为感到羞愧。
3. He has done many dishonourable things these years
   这些年，他干了许多可耻的事情。