have someone's number
The idiom "have someone's number" is commonly used to indicate a deep understanding of another person's character or motives.
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🇬🇧 UK Voice:
Definition
B2General
(informal)To understand someone's true character or intentions well enough to predict their actions.
Example
- I knew she was lying; I have her number.
- You can't fool me, I've got your number.
B2General
(informal)To be aware of someone's weaknesses, making it easy to manipulate or outsmart them.
Example
- He thought he could trick me, but I have his number.
- They tried to cheat, but the teacher had their number.
Similar
Terms that have similar or relatively close meanings to "have someone's number":
call someone's numbertake a numbertelephone numbercontact numberhave one's name onwrong numbergive someone a ringhave someone's head