A person who derives sexual gratification from observing the naked bodies or sexual acts of others, especially from a secret vantage point.

Someone who likes watching someone have sex with their partner

a person that likes to watch other people engage in sexual acts

The act of watching any personal act, including sexual acts.

A song by the band blink 182 where it describes a boy who follows a girl to her house, hides in her tree day and night watching her change.
The word itself describes one who gets sexually aroused by hiding and spying on a couple ad/or 1 person who is doing somthing sexualy arousing.

An obsessive observer, typically of sordid or otherwise sensational subjects.

a person who enjoys watching others have sex. claire caplan.