offender Definition

offend
verb offended, offending

1. To make someone feel hurt or angry; to insult them.

Thesaurus: insult, affront, disgruntle, outrage, anger, pique, provoke, step on someone's toes; Antonym: please.
2. To be unpleasant or annoying to someone.
intr
3a. To commit a sin or crime against them;

Form: offend against someone (usually)
Form: offend against something
intr
3b. To act in a way that is not in accordance with (custom, etc).

Form: offend against someone (usually)
Form: offend against something

Derivative: offender
noun

Someone who is guilty of a crime or sin
Thesaurus: criminal, culprit, guilty party, transgressor, perpetrator, wrongdoer, miscreant.

Derivative: offending
adj

Etymology: 14c: from Latin offendere, from of- against + fendere to strike.