unethical
adjective
ʌnˈeθɪkl 
ʌnˈeθɪkl not morally acceptable
unethical behaviourIt would be unethical to carry out such experiments on animals.Opposite
ethicalunethically ʌnˈeθɪkli ʌnˈeθɪkli 
Definition of unethical adjective from the Oxford Advanced Learner's Dictionary
ʌnˈeθɪkl ʌnˈeθɪkl ʌnˈeθɪkli ʌnˈeθɪkli 