foul play

Definition of Foul Play in English :

1. foul play

unfair or dishonest behavior (especially involving violence)

WordNet Lexical Database for English. Princeton University. 2010.

Foul Play

noun

1.

unfair or treacherous conduct esp with violence

2.

a violation of the rules in a game or sport

1.

unfair play; action that breaks the rules of the game

2.

treacherous action or violence; esp., murder

n.

1. Intentionally violent or injurious behavior, especially that suggestive of a criminal act.

2. Inappropriate, unethical, or unlawful conduct, especially to disadvantage an opponent.