walls have ears
idiomPart ofwall
walls have ears — idiom
1. used to warn people that others may be listening, so they should be careful what
1.idiom
Definition
used to warn people that others may be listening, so they should be careful what they say.
Example
Be careful what you say in this café — walls have ears, you know.
Lower your voice. Walls have ears, and we cannot trust everyone here.