dirty trick
noun /ˌdɜːti ˈtrɪk/
/ˌdɜːrti ˈtrɪk/
- [usually plural] dishonest, secret and often illegal activity by a political group or other organization that is intended to harm the reputation or success of an opponent
- a dirty tricks campaign
- an unpleasant and dishonest act
- What a dirty trick to play!