repeat offender; recidivist
Legal and general term for a person who commits crimes repeatedly. Often used in criminal justice contexts.
累犯者に対する刑罰は厳しくなる傾向がある。
Punishments for repeat offenders tend to become harsher.
Compound of 累 (るい, 'accumulate, repeat') + 犯 (はん, 'crime, offense') + 者 (しゃ, 'person').