French grammar · Advanced
The Subjunctive After Negative and Indefinite Antecedents in French
When a relative clause describes something that does not exist or has not been found yet, French puts its verb in the subjunctive. That is why je ne connais personne qui sache and je cherche quelqu'un qui sache both take sache, while j'ai un ami qui sait takes the indicative.
Je ne connais personne qui sache réparer ça.
I don't know anyone who can fix that.
What it is
Most subjunctive rules are about the verb in the main clause: vouloir que, il faut que, avoir peur que. This one is different. Here the trigger is the noun or pronoun the relative clause describes. If that thing is being denied, doubted, or merely wished for, the clause describing it cannot be stated as fact, and the subjunctive marks that.
Il n'y a rien qui puisse le convaincre. — There's nothing that could convince him.
How to spot it
Look at what qui or que points back to. If it points back to personne, rien, aucun, or a noun the speaker has not actually found, use the subjunctive. If it points at something real and identified, use the indicative.
- Je cherche un livre qui explique cette théorie. — I'm looking for a book that explains this theory. (any such book)
- J'ai trouvé un livre qui explique cette théorie. — I found a book that explains this theory. (a real one)
- Il n'y a aucun train qui parte avant six heures. — There's no train that leaves before six.
- Connais-tu quelqu'un qui veuille ce canapé ? — Do you know anyone who wants this sofa ?
The same French sentence can take either mood. Choosing the indicative asserts that the thing exists; choosing the subjunctive leaves that open.
Subjunctive with Negative and Indefinite Pronouns Quick Reference
Which antecedents pull the subjunctive
| Antecedent | Mood | Example |
|---|---|---|
| personne | subjunctive | personne qui sache — nobody who knows |
| rien | subjunctive | rien qui puisse aider — nothing that can help |
| aucun / nul | subjunctive | aucun candidat qui convienne — no suitable candidate |
| pas de + noun | subjunctive | pas de solution qui soit simple — no simple solution |
| quelqu'un / quelque chose (sought) | subjunctive | quelqu'un qui parle russe — someone who speaks Russian |
| un / une + noun (sought) | subjunctive | un logement qui ait un jardin — a flat with a garden |
| a specific, identified noun | indicative | l'ami qui parle russe — the friend who speaks Russian |
| le seul, le premier, le meilleur | subjunctive (usually) | le seul qui ait compris — the only one who understood |
Common Subjunctive with Negative and Indefinite Pronouns Examples in French
The pattern across the different triggers:
After Personne and Rien
- Il n'y a personne qui puisse me remplacer.
- There's nobody who can replace me.
- Je ne vois rien qui vaille la peine.
- I see nothing worth the trouble.
- Personne ici ne connaît quelqu'un qui fasse ça.
- Nobody here knows anyone who does that.
- Rien de ce qu'il dise ne me surprend.
- Nothing he says surprises me.
The clause describes a person or thing the sentence has just denied the existence of, so it cannot be asserted as fact.
After Aucun and Pas De
- Il n'existe aucun remède qui soit vraiment efficace.
- There's no remedy that's genuinely effective.
- Nous n'avons aucune preuve qui tienne.
- We have no evidence that stands up.
- Il n'y a pas de mot qui traduise exactement ça.
- There's no word that translates that exactly.
- Je ne connais aucun endroit qui vaille ce village.
- I know no place that's worth this village.
Aucun and pas de deny existence just as flatly as personne and rien, and behave the same way.
Looking For Something Not Yet Found
- Je cherche un appartement qui ait un balcon.
- I'm looking for a flat with a balcony.
- Nous voulons une personne qui sache coder.
- We want someone who can code.
- Il lui faut un travail qui lui plaise.
- He needs a job he enjoys.
- Elle rêve d'un endroit où elle puisse écrire.
- She dreams of a place where she can write.
Chercher, vouloir, avoir besoin de, and falloir all set up something desired rather than something possessed.
In Questions and Doubts
- Y a-t-il quelqu'un qui comprenne l'allemand ?
- Is there anyone who understands German ?
- Connaissez-vous un hôtel qui accepte les chiens ?
- Do you know a hotel that takes dogs ?
- Existe-t-il une méthode qui marche vraiment ?
- Is there a method that really works ?
- Je doute qu'il y ait un vol qui parte ce soir.
- I doubt there's a flight leaving tonight.
A question leaves existence open, which is enough on its own to license the subjunctive.
How the Rule Works
The trigger is not the verb in front of the clause but the reality status of the thing the clause describes.
The Antecedent Decides, Not the Main Verb
In vouloir que the trigger is vouloir. Here it is the noun or pronoun that qui or que refers back to. Change that noun from personne to mon frère and the mood changes with it.
Je ne connais personne qui vienne, mais j'ai un ami qui vient.
I know nobody who's coming, but I have a friend who's coming.
Look left of qui, not at the main verb.
Non-existence Blocks the Indicative
The indicative asserts. Saying rien qui peut would assert that a thing capable of it exists, in the same breath as denying that it does, which is why French rejects the combination.
Il n'y a rien qui me fasse plus plaisir.
There's nothing that pleases me more.
Denied existence → subjunctive.
Indefinite Means Not Yet Identified
Un and quelqu'un can point at something real or at a specification you hope to fill. The subjunctive is how French signals the second reading, which English handles with intonation or with any.
Je veux une voiture qui consomme peu.
I want a car that uses little fuel.
Any such thing → subjunctive.
Finding the Thing Switches the Mood
As soon as the search succeeds, the noun becomes specific and the clause becomes a plain fact about it. The verb moves into the indicative even though the words around it barely change.
J'ai enfin trouvé une voiture qui consomme peu.
I've finally found a car that uses little fuel.
Found it → indicative.
Negation of the Main Verb Is Not Enough
Je ne dis pas que does not trigger this rule; the clause has to describe an antecedent. What matters is whether the thing exists, not whether the sentence contains a ne.
Je n'aime pas le film qui passe ce soir.
I don't like the film that's on tonight.
A real film → indicative, despite the ne.
Common Mistakes with Subjunctive with Negative and Indefinite Pronouns
Incorrect: Je ne connais personne qui peut m'aider. — I don't know anyone who can help me.
Correct: Je ne connais personne qui puisse m'aider. — I don't know anyone who can help me.
Personne denies that such a person exists, so the clause describing them cannot be asserted in the indicative. Peut would claim there really is someone with that ability.
Incorrect: Je cherche une maison qui a un jardin. — I'm looking for a house with a garden.
Correct: Je cherche une maison qui ait un jardin. — I'm looking for a house with a garden.
The house has not been found, so it is a specification rather than an object. The indicative version is grammatical but means you are looking for a particular house you already know has a garden.
Incorrect: C'est le seul ami qui a compris. — He's the only friend who understood.
Correct: C'est le seul ami qui ait compris. — He's the only friend who understood.
Le seul makes a claim about everyone else too, and French hedges that with the subjunctive. Because the understanding is finished, the form needed is the past subjunctive ait compris.
Incorrect: Il n'y a rien que je peux faire. — There's nothing I can do.
Correct: Il n'y a rien que je puisse faire. — There's nothing I can do.
The same rule applies whether the relative pronoun is qui or que. Rien is the antecedent either way, and it denies existence, which is what forces the mood.
The Present Subjunctive Forms You Will Need
For regular verbs the subjunctive stem is the ils form of the present minus -ent. The irregulars below are the ones that turn up again and again in this construction, because they are the verbs of ability, knowledge and existence.
Regular Endings
Take ils parlent, ils finissent, ils vendent, drop -ent, and add -e, -es, -e, -ions, -iez, -ent. The nous and vous forms are identical to the imparfait.
| Pronoun | parler | finir | vendre |
|---|---|---|---|
| je / j' | parle | finisse | vende |
| tu | parles | finisses | vendes |
| il / elle / on | parle | finisse | vende |
| nous | parlions | finissions | vendions |
| vous | parliez | finissiez | vendiez |
| ils / elles | parlent | finissent | vendent |
Every form here follows que: que je parle, qu'il finisse, qu'ils vendent.
Être, Avoir, Aller, Faire
Four verbs with genuinely irregular subjunctives. Soit and ait in particular are almost unavoidable after aucun and rien.
| Pronoun | être | avoir | aller | faire |
|---|---|---|---|---|
| je / j' | sois | aie | aille | fasse |
| tu | sois | aies | ailles | fasses |
| il / elle / on | soit | ait | aille | fasse |
| nous | soyons | ayons | allions | fassions |
| vous | soyez | ayez | alliez | fassiez |
| ils / elles | soient | aient | aillent | fassent |
Aller and faire keep a regular nous and vous built on the present stem: allions, fassions.
Pouvoir, Savoir, Vouloir, Venir
These four carry the meanings that negative and indefinite clauses reach for most: being able, knowing how, being willing, and turning up.
| Pronoun | pouvoir | savoir | vouloir | venir |
|---|---|---|---|---|
| je / j' | puisse | sache | veuille | vienne |
| tu | puisses | saches | veuilles | viennes |
| il / elle / on | puisse | sache | veuille | vienne |
| nous | puissions | sachions | voulions | venions |
| vous | puissiez | sachiez | vouliez | veniez |
| ils / elles | puissent | sachent | veuillent | viennent |
Vouloir has two stems: veuill- in the singular and the third person plural, voul- for nous and vous.
Superlatives and Le Seul
A second family of antecedents takes the subjunctive for a related reason: they make a claim so absolute that the speaker hedges it.
After a superlative
Le plus, le moins and their relatives set up a claim about everything in a category, which nobody can verify. The subjunctive softens the assertion into an opinion.
- C'est le meilleur livre que j'aie lu cette année.
- It's the best book I've read this year.
- C'est la ville la plus étrange que je connaisse.
- It's the strangest city I know.
- C'est le pire film qu'on ait vu.
- It's the worst film we've seen.
The indicative is possible and increasingly common in speech, but the subjunctive is the careful written choice.
After le seul, le premier, le dernier, l'unique
These behave like superlatives because they too claim uniqueness. The clause after them normally goes into the subjunctive.
- C'est le seul restaurant qui soit ouvert le lundi.
- It's the only restaurant open on Mondays.
- Tu es la première personne qui me pose cette question.
- You're the first person to ask me that.
- C'est le dernier train qui parte ce soir.
- It's the last train leaving tonight.
With le premier and le dernier, the indicative is quite acceptable when the fact is plainly verifiable.
The past subjunctive in these clauses
When the action in the relative clause is already over, use the past subjunctive: aie, aies, ait, ayons, ayez, aient plus a participle, or the equivalent with sois and soit.
- C'est le seul film qui m'ait vraiment plu.
- It's the only film I genuinely liked.
- Il n'y a personne qui soit venu me voir.
- There's nobody who came to see me.
- C'est la meilleure décision qu'ils aient prise.
- It's the best decision they've made.
Qu'il ait pris and qu'il prenne differ only in timing; the trigger for the mood is identical.
Subjunctive with Negative and Indefinite Pronouns FAQs
- Why does personne qui take the subjunctive in French?
- Because personne denies that the person exists, and the indicative would assert a fact about them. Je ne connais personne qui sache le russe leaves the existence of such a person unclaimed, which is precisely what the subjunctive does.
- When does a relative clause take the subjunctive?
- When the thing it describes is denied, questioned, or still being looked for. Un appartement qui ait un balcon is a flat you hope to find; un appartement qui a un balcon is one you have already seen.
- Does aucun always trigger the subjunctive?
- In a relative clause after it, yes, as in il n'y a aucune raison qui justifie ça. Aucun on its own as a determiner does not affect the main verb: aucun train ne part avant six heures stays in the indicative.
- Do superlatives really need the subjunctive?
- Careful written French uses it: c'est le plus beau musée que j'aie visité. Everyday speech often keeps the indicative, and nobody will misunderstand you, but the subjunctive is the form you will meet in print.
- How do I tell whether a noun is definite enough for the indicative?
- Ask whether you could point at it. Je cherche un médecin qui parle anglais describes a requirement, so it takes the subjunctive; j'ai un médecin qui parle anglais describes a person sitting in a specific surgery, so it takes the indicative.