Grammar / A1 : Beginner / Plural of nouns
Plural of nouns
General rule with -s, special cases (-aux, -eux...).
A plural that lives in writing more than in speech
The plural of most French nouns is formed by adding -s. You already know this. What is worth understanding from the start is that this -s is almost never pronounced. un livre and des livres sound identical; the word itself carries no audible change. The plural signal reaches the listener through the articles and adjectives that surround the noun: le versus les, un versus des, mon versus mes.
This has two consequences. In listening, you must train yourself to catch the article rather than the noun ending. In writing, you must learn to add the correct ending even though you cannot hear it, and the rules for which ending to add are what this lesson covers.
1. The default rule : add -s
The vast majority of French nouns follow one rule: add -s to the singular form. Both masculine and feminine nouns follow this pattern. The -s is silent.
| Singular | Plural | Meaning |
|---|---|---|
| un livre | des livres | book(s) |
| une maison | des maisons | house(s) |
| un ami | des amis | friend(s) |
| une ville | des villes | city/cities |
| un étudiant | des étudiants | student(s) |
| une question | des questions | question(s) |
| un problème | des problèmes | problem(s) |
| une idée | des idées | idea(s) |
💡 Liaison: although the plural -s is silent before a consonant, it is pronounced before a vowel or silent h; this is the mandatory liaison. les amis → /lez ami/ (the s of les links to the vowel). des enfants → /dez ɑ̃fɑ̃/. Liaison makes the plural audible in these cases.
2. Nouns unchanged in plural
Nouns that already end in -s, -x, or -z in the singular do not change in the plural. Both forms look and sound exactly the same; only the article signals the number.
| Singular | Plural | Meaning |
|---|---|---|
| un bras | des bras | arm(s) |
| un pays | des pays | country/countries |
| un repas | des repas | meal(s) |
| un progrès | des progrès | progress (uncountable in English) |
| une voix | des voix | voice(s) |
| un prix | des prix | price(s) / prize(s) |
| un nez | des nez | nose(s) |
| un gaz | des gaz | gas(es) |
Le prix des repas a augmenté. (The price of meals has gone up.): both prix and repas are unchanged in plural
Ces pays ont beaucoup de progrès à faire. (These countries have a lot of progress to make.)
3. -eau / -au / -eu endings : add -x
Nouns ending in -eau and -au take -x in the plural rather than -s. Most nouns ending in -eu also take -x. This is a consistent rule with very few exceptions worth knowing at this level.
| Singular | Plural | Meaning |
|---|---|---|
| un bateau | des bateaux | boat(s) |
| un gâteau | des gâteaux | cake(s) |
| un chapeau | des chapeaux | hat(s) |
| un bureau | des bureaux | desk(s) / office(s) |
| un cadeau | des cadeaux | gift(s) |
| un tableau | des tableaux | board(s) / painting(s) |
| un château | des châteaux | castle(s) |
| un jeu | des jeux | game(s) |
| un feu | des feux | fire(s) / traffic light(s) |
| un vœu | des vœux | wish(es) |
⚠ Two common exceptions that add -s instead of -x:
un pneu → des pneus (tyre) · un bleu → des bleus (bruise / the colour blue)
4. -al endings : change to -aux
Most nouns ending in -al change to -aux in the plural. This is one of the most productive patterns in French: there are hundreds of nouns ending in -al, and nearly all follow this rule.
| Singular (-al) | Plural (-aux) | Meaning |
|---|---|---|
| un animal | des animaux | animal(s) |
| un journal | des journaux | newspaper(s) |
| un cheval | des chevaux | horse(s) |
| un hôpital | des hôpitaux | hospital(s) |
| un général | des généraux | general(s) |
| un canal | des canaux | canal(s) |
| un métal | des métaux | metal(s) |
| un signal | des signaux | signal(s) |
⚠ A small number of common -al nouns add -s instead of changing to -aux. These must be learnt individually:
un festival → des festivals · un bal → des bals · un carnaval → des carnavals · un récital → des récitals
5. -ou endings : mostly -s, but seven exceptions
Nouns ending in -ou generally follow the default rule and add -s. However, seven very common words add -x instead. These seven are worth learning as a fixed group.
| Regular -ou → -ous | Exceptions -ou → -oux |
|---|---|
|
un trou → des trous (hole) un clou → des clous (nail) un sou → des sous (penny) un bambou → des bambous (bamboo) |
un bijou → des bijoux (jewel) un genou → des genoux (knee) un chou → des choux (cabbage) un hibou → des hiboux (owl) un caillou → des cailloux (pebble) un pou → des poux (louse) un joujou → des joujoux (toy; child's word) |
💡 Of the seven exceptions, bijoux and genoux are by far the most useful at A1 level. des bijoux appears constantly in descriptions of jewellery and gifts; les genoux (knees) appears in body-related expressions. The others can be acquired gradually with reading.
6. Key irregular plurals
A very small group of nouns have completely irregular plurals that must be learnt individually.
| Singular | Plural | Meaning | Note |
|---|---|---|---|
| un œil | des yeux | eye(s) | Completely different stem (must be memorised) |
| un travail | des travaux | work / task(s) | -ail → -aux (like -al, but rarer) |
| Monsieur | Messieurs | Mr / Gentlemen | Title (different stem entirely) |
| Madame | Mesdames | Mrs / Ms / Ladies | Title (different stem entirely) |
| Mademoiselle | Mesdemoiselles | Miss | Title |
Elle a de beaux yeux bleus. (She has beautiful blue eyes.): yeux, not œils
Les travaux dans la rue durent depuis un mois. (The roadworks have been going on for a month.)
Mesdames et Messieurs, bienvenue ! (Ladies and Gentlemen, welcome!)
7. Nouns used mainly in the plural
Some French nouns are used almost exclusively in the plural, even when their English equivalent is singular or uncountable.
| French (plural) | English | Example |
|---|---|---|
| les vacances | holiday / vacation | Je pars en vacances la semaine prochaine. (I am going on holiday next week.) |
| les gens | people | Les gens sont sympas ici. (People are friendly here.) |
| les mathématiques | mathematics | Je n'aime pas les mathématiques. (I don't like maths.) |
| les nouvelles | news | Tu as des nouvelles de lui ? (Do you have any news from him?) |
| les environs | the surrounding area | Il habite dans les environs de Lyon. (He lives in the Lyon area.) |
⚠ les vacances is always plural in French, even for a single day off. Do not say une vacance when you mean a holiday. (Note: un poste vacant exists, but it means a vacancy/job opening, not a break.)
8. Plural agreement radiates through the sentence
When a noun is plural, everything that refers to it must also become plural: the article, the adjective, the possessive, and (when the noun is the subject) the verb. This is why learning to write plural correctly matters; the agreement errors are visible throughout the sentence.
un beau livre intéressant → de beaux livres intéressants
mon vieux journal → mes vieux journaux
ce nouvel animal → ces nouveaux animaux
Le gâteau est délicieux. → Les gâteaux sont délicieux.
Son œil est fatigué. → Ses yeux sont fatigués.
9. Summary of all plural rules
| Singular ending | Plural rule | Examples |
|---|---|---|
| Most nouns | Add -s | livre → livres, maison → maisons |
| Already ends in -s, -x, -z | No change | bras → bras, prix → prix, nez → nez |
| -eau, -au | Add -x | bateau → bateaux, bureau → bureaux |
| -eu | Add -x (except pneu, bleu) | jeu → jeux, feu → feux |
| -al | -aux (except festival, bal, carnaval) | animal → animaux, journal → journaux |
| -ou | Add -s (except 7 words → -oux) | trou → trous / bijou → bijoux |
| Irregular | Learn individually | œil → yeux, travail → travaux |
10. Key points
✓ Default rule: add -s (the -s is never pronounced, only visible in writing)
✓ Already ends in -s, -x, -z: no change; bras, prix, nez
✓ -eau, -au → -eaux, -aux: bateau → bateaux, bureau → bureaux
✓ -eu → -eux (except pneu, bleu): jeu → jeux, feu → feux
✓ -al → -aux: animal → animaux, journal → journaux
✓ Exceptions: festival → festivals, bal → bals, carnaval → carnavals
✓ -ou → -ous (regular) / -oux (bijou, genou, chou, hibou, caillou, pou, joujou)
✓ Key irregular: œil → yeux / travail → travaux
✓ Nouns mainly used in plural: les vacances, les gens, les nouvelles
✓ Plural agreement ripples through article, adjective, possessive, and verb