1
general::
Phrase(s): eavesdrop on someone
to listen in on people having a private conversation. • I saw her eavesdropping on them. • Please don’t eavesdrop on me., Phrase(s): eavesdrop on something
to listen in on a private conversation. • She was eavesdropping on their conversation. • Maria was eavesdropping on the telephone call.
McGrawhill's American Idioms And Phrasal Verbs