This page is about the phrasal verb listen in
to try to hear what people are saying when they don't know you're listening
- listen in Kelly said she caught her brother listening in when she was with boyfriend. She opened the door and he was standing right there!
- listen in on sth/sb Do you think government agencies should be allowed to listen in on our private telephone calls?
The police have to get permission from a judge before listening in on
Contributor: Matt Errey