French phrase
Je ne l'ai pas fait exprès.
Meaning
I didn't do it on purpose.
When to use it
Says the action was accidental rather than deliberate. Often used as an apology after hurting someone or damaging something.
Example dialogue
Tu as déchiré mon dessin !
You tore my drawing!
Je ne l'ai pas fait exprès. Je vais t'aider à le réparer.
I didn't do it on purpose. I'll help you fix it.