adj. obtained illegally or by improper means; "dirty money"; "ill-gotten gains"

adj. (of liquids) clouded as with sediment; "a cloudy liquid"; "muddy coffee"; "murky waters"

adj. involving or being or having the nature of a crime; "a criminal offense"; "criminal abuse"; "felonious intent"

adj. contrary to or forbidden by law; "an illegitimate seizure of power"; "illicit trade"; "an outlaw strike"; "unlawful measures"

adj. subject to punishment by law; "a penal offense"