Eavesdropper

n.

1.

One who stands under the eaves, or near the window or door of a house, to listen; hence, a secret listener.

Noun

1.

eavesdropper - a secret listener to private conversations

Paul Pry, Peeping Tom, audient, auditor, busybody, gossip, hearer, hearkener, inquirer, inquisitive, inquisitor, nosy Parker, overhearer, pry, querier, querist, questioner, quidnunc, rubberneck, rubbernecker, scopophiliac, sightseer, snooper, voyeur, yenta