Source : Webster's Revised Unabridged Dictionary (1913)

Cheat \Cheat\, v. t. [imp. & p. p. {Cheated}; p. pr. & vb. n.
   {Cheating}.] [See {Cheat}, n., {Escheat}.]
   1. To deceive and defraud; to impose upon; to trick; to
      swindle.

            I am subject to a tyrant, a sorcerer, that by his
            cunning hath cheated me of this island. --Shak.

   2. To beguile. --Sir W. Scott.

            To cheat winter of its dreariness.    --W. Irving.

   Syn: To trick; cozen; gull; chouse; fool; outwit; circumvent;
        beguile; mislead; dupe; swindle; defraud; overreach;
        delude; hoodwink; deceive; bamboozle.

Source : WordNet®

cheating
     adj 1: not faithful to a spouse or lover; "adulterous husbands and
            wives"; "a two-timing boyfriend" [syn: {adulterous}, {cheating(a)},
             {two-timing(a)}]
     2: violating accepted standards or rules; "a dirty fighter";
        "used foul means to gain power"; "a nasty unsporting
        serve"; "fined for unsportsmanlike behavior" [syn: {cheating(a)},
         {dirty}, {foul}, {unsporting}, {unsportsmanlike}]
     n : a deception for profit to yourself [syn: {cheat}]