not morally acceptable 不道德的 The doctor was suspended amid accusations of unethical behaviour. 这名医生因被指控有不道德行为而被停职。 - it is unethical to do something
It would be unethical to carry out such experiments on animals. 在动物身上进行这样的实验是不道德的。
Oxford Collocations DictionaryUnethical is used with these nouns:- conduct
- practice