#1 cheating n. [cheat] a deception for profit to yourself. wn
#2 cheating s. [adulterous, two-timing] not faithful to a spouse or lover; "adulterous husbands and wives"; "a two-timing boyfriend". wn
#3 cheating s. [dirty, foul, unsporting, unsportsmanlike] violating accepted standards or rules; "a dirty fighter"; "used foul means to gain power"; "a nasty unsporting serve"; "fined for unsportsmanlike behavior". wn
vizzz