lacking honor or integrity; deserving dishonor; "dishonorable in thought and deed"; "a dishonorable discharge"

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"

morally unacceptable; "the dishonorable conduct of trusted men"