How to Express Uncertainty in French: Say 'I'm Not Sure' and 'It Might Be'
Learn elementary French phrases to express doubt and avoid strong claims, such as 'Je ne suis pas sûr' and 'Ça se peut'. Perfect for polite, cautious conversation.
By LiamCulture & nuance · Yapr Learn
In French, as in English, expressing uncertainty is key to polite and accurate communication. Instead of making strong claims, you can use phrases like 'Je ne suis pas sûr' (I'm not sure) or 'Il se peut que' (It might be). This lesson teaches you elementary structures to soften statements, ask for confirmation, and avoid sounding too direct. You'll learn set phrases, a useful pattern with 'peut-être', and how to use the subjunctive in a simple way. By the end, you'll be able to hedge your opinions naturally in everyday French.
By the end, you can…
- say 'I'm not sure' and similar phrases in French.
- use 'peut-être' and 'il se peut que' to express possibility.
- soften statements to avoid strong claims.
Listen once. Try it slowly. Then say it without looking.
Checking available voices…
Je ne suis pas sûr.
I'm not sure. (masculine speaker)
zhuh nuh swee pah sewr
Use when you are not certain about a fact or opinion. For a female speaker, say 'Je ne suis pas sûre' (pronounced the same).
Je ne suis pas certain.
I'm not certain. (masculine speaker)
zhuh nuh swee pah sehr-tan
A bit more formal than 'sûr'. Again, feminine form is 'certaine' (pronounced 'sehr-ten').
Peut-être.
Maybe. / Perhaps.
puh-tetr
Can be used alone or at the beginning of a sentence. When followed by 'que', it requires the subjunctive: 'Peut-être qu'il vient' (Maybe he's coming).
Il se peut que...
It might be that... / It's possible that...
eel suh puh kuh
This phrase is always followed by the subjunctive. Example: 'Il se peut qu'il pleuve' (It might rain).
Je ne sais pas si...
I don't know if...
zhuh nuh say pah see
Use this to express doubt about a condition. Example: 'Je ne sais pas s'il vient' (I don't know if he's coming).
Pronunciation guides are approximate. Slow playback keeps the original pitch.
Make it make sense
Useful pattern
To express uncertainty, you can use 'peut-être' before a sentence, but if you use 'peut-être que', the verb that follows is normally in the indicative mood in everyday French. For example, 'Peut-être qu'il est malade' (Maybe he's sick) is standard. In very formal French, the subjunctive may be used: 'Peut-être qu'il soit malade', but this is rare in speech. Another pattern is 'Il se peut que' + subjunctive: 'Il se peut qu'elle vienne' (She might come). Remember that the subjunctive endings for regular verbs are: -e, -es, -e, -ions, -iez, -ent.
When to use it
Use these phrases when you want to avoid making a strong claim, especially in polite conversation or when you are unsure of the facts. For instance, instead of saying 'C'est vrai' (It's true), you can say 'Je ne suis pas sûr que ce soit vrai' (I'm not sure it's true). This softens your statement and shows humility. Also, when giving opinions, you can say 'Je ne sais pas si c'est une bonne idée' (I don't know if it's a good idea) to avoid committing to a firm stance.
Listen to each line, then take one part and reply out loud.
Tu viens à la fête ce soir ?
Are you coming to the party tonight?tew vyen ah lah fet suh swahrJe ne suis pas sûr. Il se peut que je travaille.
I'm not sure. I might be working.zhuh nuh swee pah sewr. eel suh puh kuh zhuh tra-vyePeut-être que tu pourras venir plus tard ?
Maybe you can come later?puh-tetr kuh tew poo-rah vuh-neer plew tarJe ne sais pas si je pourrai. Je te tiens au courant.
I don't know if I'll be able to. I'll keep you posted.zhuh nuh say pah see zhuh poo-ray. zhuh tuh tyen oh koo-ranA little context goes a long way
In French culture, expressing uncertainty is often seen as a sign of politeness and thoughtfulness. It's common to use phrases like 'Je ne suis pas sûr' even when you are fairly certain, to avoid appearing arrogant. However, in formal writing or professional settings, too much hedging might be perceived as lack of confidence. Adjust your level of uncertainty to the context. In Quebec, 'Je ne suis pas sûr' is pronounced similarly, but you might hear 'Je suis pas sûr' without the 'ne' in casual speech, which is also common in France.
One thing to watch for
Using 'Je ne suis pas sûr' without gender agreement when the speaker is female.
Try this instead: A female speaker should say 'Je ne suis pas sûre' (or 'certaine'). The pronunciation is the same, but the spelling changes. For example, a woman says: 'Je ne suis pas sûre de pouvoir venir.'
Your turn
Try answering out loud before checking a possible answer.
1How would you say 'I'm not sure' if you are a female speaker?
Show a sample answer
Je ne suis pas sûre.
This is the correct feminine form. The masculine is 'sûr'. Both are pronounced the same.
2Translate: 'Maybe he is at home.' Use 'peut-être que'.
Show a sample answer
Peut-être qu'il est à la maison.
In everyday French, the indicative 'est' is commonly used after 'peut-être que', though the subjunctive 'soit' is also possible in formal contexts.
3What mood follows 'Il se peut que'? Give an example.
Show a sample answer
The subjunctive. Example: 'Il se peut qu'elle vienne.'
'Il se peut que' always triggers the subjunctive. 'Vienne' is the subjunctive form of 'venir'.
Use 'Je ne suis pas sûr(e)', 'Peut-être', and 'Il se peut que' to express uncertainty politely. Remember gender agreement and the subjunctive after certain phrases.
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