Antonyms of adj unethical

1 sense of unethical

Sense 1
unethical (vs. ethical) -- (not conforming to approved standards of social or professional behavior; "unethical business practices")

ethical (vs. unethical) -- (conforming to accepted standards of social or professional behavior; "an ethical lawyer"; "ethical medical practice"; "an ethical problem"; "had no ethical objection to drinking"; "Ours is a world of nuclear giants and ethical infants"- Omar N. Bradley)

Similarity of adj unethical

1 sense of unethical

Sense 1
unethical (vs. ethical) -- (not conforming to approved standards of social or professional behavior; "unethical business practices")
          Also See-> wrong#2