You can picture offence as a blow that lands on something: a person walks up and knocks against a line other people were keeping. Sometimes the line is the law, so the knock is a crime with a name and a punishment. Sometimes the line is another person's feelings, so the knock is a hurt they carry away. The word stays on the side of the one doing the striking and the damage it leaves.
From the word’s history
Latin offensa, literally 'a striking against' (noun use of the past participle of offendere 'to hit, strike against'), from ob- 'against' + -fendere 'to strike'. The same -fendere sits inside defend — striking away from you rather than at you.
拉丁文 offensa 字面就是「撞上去的那一下」，來自 offendere（撞、打）：ob-（朝著、對著）+ -fendere（打）。同一個 -fendere 也躲在 defend 裡（把打過來的擋開）。看得出這個字為什麼能同時管「犯法」「傷到人的感受」和「主動進攻」——三個都是朝外面打出去的那一擊，只是撞到的東西不同。
etymonline.com — https://www.etymonline.com/word/offence
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原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
offencenoun
- 1
UK, Australia, New Zealand, and Canada standard spelling of offense.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。