Definition, Meaning & Synonyms
do a number on someone
idiomatic expression
/duː ə ˈnʌmbər ɒn ˈsʌmwʌn/

Definition
To harm or negatively affect someone, often through deceit or manipulation.

Examples
- She really did a number on him when she spread those rumors.
- Be careful; that con artist is known for doing a number on unsuspecting victims.

Meaning
This phrase typically refers to causing someone emotional or psychological distress or tricking them in a way that leads to a bad outcome.

Synonyms
- trick
- deceive
- manipulate
- harm