not adhering to ethical or moral principles; "base and unpatriotic motives"; "a base, degrading way of life"; "cheating is dishonorable"; "they considered colonialism immoral"; "unethical practices in handling public funds"
If you describe someone's behaviour as unethical, you think it is wrong and unacceptable according to a society's rules or people's beliefs. It's simply unethical to promote and advertise such a dangerous product ethical. morally unacceptable