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Si vs oui (yes)

Si vs oui (yes)

Level A2 (Upper Beginner)

The French Word of the Day is si, and it’s often confused with oui. While oui is the standard way to say “yes,” si is used specifically to contradict a negative statement. Depending on context, si can also mean “if” or “so.”

Meaning
Pronunciation
Example sentences
Related word

French Word of the Day: Si vs Oui – Learn the difference between these two ways of saying “yes” in French.

Meaning

The French word si has several meanings depending on context. Most notably, it means “yes” — but only to contradict a negative statement, unlike oui, which is used for standard affirmation.

For example, if someone says “Tu n’as pas faim ?” (You’re not hungry?), you can reply “Si !” (Yes, I am!). Si also means “if” (as a conjunction) and “so” (as an adverb to intensify adjectives).

Tu n’es pas fatigué ? – Si ! (You’re not tired? – Yes, I am!)
Si tu veux, on part. (If you want, we’ll leave.)
C’est si beau ! (It’s so beautiful!)

Pronunciation

/si/

A smiling French woman says “Si !” with a raised hand and a surprised man, contradicting a negative statement. Paris street scene with Eiffel Tower in background.

Example sentences – Si vs oui in Real French

No need for si

These first two examples are simple yes-no questions, with oui (yes) and non (no) used as direct one-word responses.

Aimez-vous manger la glace ? – Oui.

Do you like eating ice cream? – Yes.

Aimez-vous manger les choux de Bruxelles ? – Non.

Do you like eating Brussels sprouts? – No.

Introduction of si

These next two examples show how si is used. The question is asked in the negative form (You don’t like…?). The first response confirms the negative with a simple non.

Vous n’aimez pas manger ce chocolat ? – Non.

You don’t like eating this chocolate? – No.

Here, the same negative question is being asked. However, since the response is “yes”, it contradicts the negative, so si must be used instead of oui.

Vous n’aimez pas manger ce chocolat ? – Si ! C’est délicieux!

You don’t like eating this chocolate? – Yes! It’s delicious!

These final two examples further illustrate how to use si. In the first, the question is affirmative, so si is not needed. In the second, the question is negative — which requires si to answer “yes.”

Tu aimes Sylvie ? – Oui, elle est sympa.

You like Sylvie? – Yes. She’s nice.

Tu n’aimes pas Sylvie ? – Si ! Elle est sympa!

You don’t like Sylvie? – Yes! She’s nice!

  • oui – yes (general affirmation)
  • non – no
  • mais si ! – yes, really! / but yes! (strong contradiction)
  • si, bien sûr ! – yes, of course!
  • si, je t’assure ! – yes, I assure you!
  • si, c’est vrai ! – yes, it’s true!
  • tu te trompes – you’re wrong (often follows a si)
  • je ne suis pas d’accord – I disagree (used when affirming against a negative)
  • affirmatif – affirmative (formal yes)
  • absolument – absolutely (strong yes)

Continue Your French Learning!

Now that you’ve mastered how to use si, check out our lesson on the informal phrase bah ouais !, which means “yeah” in French. For quick and fun daily lessons, explore our French Word of the Day series — and don’t miss our extensive vocabulary lists to keep building your skills!

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David Issokson Founder & French Teacher at FrenchLearner.com
David Issokson is the founder of FrenchLearner.com, where he’s been helping students master French through vocabulary, grammar, and cultural lessons since 2012.

    David Issokson

    About the Author – David Issokson David Issokson is an online French teacher and the founder of FrenchLearner.com (established 2012). He has been teaching French online since 2014 and brings over 30 years of experience as a passionate French learner and fluent speaker. David creates clear, structured lessons supported by native audio recorded by Marie Assel Cambier, a professional voice artist and native French speaker. A graduate of McGill University in Montreal, he has taught hundreds of learners worldwide and publishes daily French lessons for more than 12,000 email subscribers. 📘 About David » 🌐 David’s personal site » 👍 Follow on Facebook »

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