Voyeurism (noun)

1. The practice of obtaining sexual pleasure from observing the naked bodies or sexual acts of others, especially strangers.
2. The act of watching others without them knowing.

Origin:

From the french word "voyeur" meaning "one who looks".

Examples:

1. He was arrested for voyeurism after being caught spying on his neighbor.
2. He was accused of voyeurism after being caught with a hidden camera.
3. The voyeurism was considered a serious criminal offense.
4. He was charged with voyeurism after being caught watching people through a telescope.
5. The voyeurism was considered a form of sexual deviance.