Adjective dishonourable has 3 senses
- dishonorable, dishonourable - lacking honor or integrity; deserving dishonor; "dishonorable in thought and deed"; "a dishonorable discharge"
- base, dishonorable, dishonourable, immoral, unethical - 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"
Antonym: right (indirect, via wrong)
- dishonorable, dishonourable - morally unacceptable; "the dishonorable conduct of trusted men"
Antonym: noble (indirect, via ignoble)
,