pervert
n. countable C2 Proficiency US //ˈpɝvɝt// per·vert
n. someone whose sexual behavior is considered strange, unpleasant, or not normal by most people. It is a very strong and insulting word used to judge others.
n. a person whose sexual behavior or desires are regarded as abnormal or unacceptable by societal standards. Often carries a highly pejorative or offensive tone in modern usage.
He was labeled a pervert after his behavior in the park.
The tabloid newspapers often use the word pervert to describe individuals involved in sexual scandals to provoke public outrage.
From Old French pervertir, itself from the Latin pervertō.
Usage
Highly offensive and judgmental; typically used as a derogatory label rather than a neutral description.