Difference Between Oui and Si?

A common question for French learners is: When do I use “Oui” vs. “Si”? Both words mean “yes,” but they are used in different contexts. Here’s how to distinguish them:

1. Oui – “Yes”

Oui is the standard word for “yes” in French. You use it to confirm or agree with a question or statement.

  • Example:
    • Tu veux un café ? (Do you want a coffee?)
    • Oui ! (Yes!)

2. Si – “Yes” to Negatives

Si is used when responding affirmatively to a negative question or statement. If someone asks you something in the negative and you want to disagree, you use si instead of oui.

  • Example:
    • Tu n’aimes pas le chocolat ? (You don’t like chocolate?)
    • Si ! (Yes, I do!)

More Examples of Using Si:

Example 1: Responding to a Negative Question
  • Tu n’as pas faim ? (Aren’t you hungry?)
  • Si, j’ai très faim ! (Yes, I’m very hungry!)
Example 2: Disagreeing with a Negative Statement
  • Il ne fait pas beau aujourd’hui. (It’s not nice out today.)
  • Si, il fait beau ! (Yes, it’s nice out!)
Example 3: Responding to a Negative Assumption
  • Tu n’as pas fini tes devoirs ? (You haven’t finished your homework?)
  • Si, je les ai finis ! (Yes, I finished them!)
Example 4: Correcting a False Assumption
  • Tu ne parles pas espagnol, n’est-ce pas ? (You don’t speak Spanish, right?)
  • Si, je parle espagnol. (Yes, I do speak Spanish.)

When to Use Each:

  • Normal yes: Use Oui to confirm a regular statement or question.
  • Yes to a negative statement: Use Si to contradict or correct someone when they expect a “no.”

Quick Tip: Use si whenever you need to politely disagree with a negative assumption.

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