1. One who persecutes or harasses someone systematically
The persecutor was brought to justice for his crimes.
O perseguidor foi levado à justiça pelos seus crimes.
2. One who pursues or chases after someone or something
The persecutor chased the suspect through the streets.
O perseguidor perseguiu o suspeito pelas ruas.
3. Used as adjective: persecuting, harassing, or pursuing
The persecuting regime was eventually overthrown.
O regime perseguidor foi eventualmente derrubado.