foul play

Từ điển Oxford Advanced Learner 8th

ˌfoul ˈplay [foul play] BrE NAmE noun uncountable
1. criminal or violent activity that causes sb's death
•Police immediately began an investigation, but did not suspect foul play (= did not suspect that the person had been murdered).
2. (BrE)dishonest or unfair behaviour, especially during a sports game
•He was sent off for foul play.

Example Bank:
•The police found no evidence of foul play.
•The police have ruled out foul play in the case of his death.