
Listen in
Privacy Concern
Listening in without consent is invasive and can be unethical.

I realized it was wrong to listen in; private talks are not public domain.
Secretive Nuance
'Listen in' implies a deliberate effort to hear a conversation not meant for you.

Curiosity got the better of him as he tried to listen in at the door.
Negative Connotation
Using 'listen in' in this context often carries a judgmental tone.

It's rude to listen in on family arguments.
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