An act of deception carried out for the purpose of unfair, undeserved, and/or unlawful gain.
not faithful to spouse or lover; sexually unfaithful; "a cheating lover"; "adulterous husbands and wives"; "my two-timing boy friend"
a deception for profit to yourself
violating accepted standards or rules; "a dirty fighter"; "used foul means to gain power"; "a nasty unsporting serve"; "fined for unsportsmanlike behavior"
