Definition, Meaning & Synonyms
listen-in
verb
/ˈlɪs.ən ɪn/

Definition
A process of secretly listening to a conversation or broadcast without the knowledge of the participants.

Examples
- During the meeting, I managed to listen-in on their discussion about the upcoming project.
- He had to listen in on the call to get all the details.
- The journalist was able to listen in on the negotiations between the two parties.

Meaning
To overhear a conversation or communication that one is not intended to be part of.

Synonyms
- eavesdrop
- overhear
- spy
- monitor
- tap into