voyeurism
noun /vɔɪˈɜːrɪzəm/
  /vwɑːˈjɜːrɪzəm/
[uncountable] (disapproving)- the practice of getting pleasure by secretly watching people who are wearing no clothes or having sex
 - pleasure gained from watching the problems and private lives of others
- the voyeurism inherent in this type of photography