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to have one's number
01
to have the advantage by being fully aware of someone's real motives or character
![to [have] {one's} number definition and meaning](https://cdn.langeek.co/photo/44782/original/?type=jpeg "to [have] {one's} number definition and meaning")
Idiom
Informal
Example
She thinks she can fool me, but I have her number, and I know what she's up to.
John may act friendly, but I've had his number for years; he's always looking out for himself.
Palabras Cercanas
