2 collocations for eavesdrop

He was jeered and laughed at hilariously; when he went on to say that a "Black Chamber" was spying on his every movement, shadowing other members of the Reichstag, even eavesdropping on their telephone conversations and opening their private correspondence.

The reverend gentleman seems to combine with his talent for eavesdropping a most remarkable good-fortune in the contrasts afforded by the various interlocutors whose conversation he overhears.

2 collocations for  eavesdrop