kétes

Seeming dishonest, untrustworthy, or of poor quality.

Secretive and difficult to find out about, especially in a way that seems suspicious or possibly illegal.

Morally or ethically wrong, or likely to be wrong, so that it causes concern or suspicion.

Of low or uncertain quality, standard, or taste, so that it may not be good, safe, or appropriate.

Having a truth, quality, or effectiveness that is open to doubt and probably not as good, reliable, or correct as claimed.

Having a reputation, character, or nature that is morally questionable, dishonest, or possibly illegal.

Morally or legally questionable; likely to be involved in dishonest, illegal, or unethical activities.

Not fully trustworthy, accurate, or legitimate; giving reason to suspect that something is wrong, unfair, or dishonest.

Seeming untrustworthy, dangerous, or of poor quality; questionable.

Looking dirty, run-down, and unpleasant, and often suggesting immoral or illegal activity.