offence
Pronunciation: /əˈfɛns/
(US offense)
noun
- 1a breach of a law or rule; an illegal act: the new offence of obtaining property by deception
- a thing that constitutes a violation of what is judged to be right or natural: the outcome is an offence to basic justice


Origin:
late Middle English: from Old French offens 'misdeed', from Latin offensus 'annoyance', reinforced by French offense, from Latin offensa 'a striking against, a hurt, or displeasure'; based on Latin offendere 'strike against'

Spelling help
Remember that offence ends with -ence (the spelling offense is American).