Synonyms of the word 
OFFENDER → WRONGDOER
offender
- n. One who gives or causes offense.
- n. A person who commits an offense against the law, a lawbreaker.
wrongdoer
- n. Someone who does wrong, whether morally, ethically, or in contravention of a law.
If you are interested in words, visit the following sites :
- wiktionary.org/offender For complete definition of a word
- 1word.ws/offender to play with words, suffixs, prefixs, etc.