🎓 Prepared by students from Boğaziçi University

How Are French Plurals Formed?

Plural formation in French follows systematic rules based on a noun's ending. Most nouns simply add the letter -s, but nouns ending in -au, -eau, -eux, and some -al have special patterns and change to -aux.

Short answer

Most French nouns form the plural by adding -s to the singular form. Nouns ending in -au, -eau, -eux, and certain -al words change to -aux.

French Plural Formation Rules

1
Noun ending
Check the last letter(s) of the singular noun
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2
Rule 1: -s, -x, -z
No change — the word is already plural in form
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3
Rule 2: -au, -eau, -eux
Add -x instead of -s → unique plural marker
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4
Rule 3: -al (most)
Change -al to -aux → général → généraux
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5
Rule 4: others
Add -s → chat → chats, table → tables

Step-by-step worked examples

What is the plural of 'le livre' (the book)?

Rule: most nouns add -s
livre (ends in -e) → add -s
Plural: les livres

What is the plural of 'le bureau' (the desk)?

Rule: nouns ending in -eau add -x
bureau → change to -x
Plural: les bureaux

What is the plural of 'le général' (the general)?

Rule: -al → -aux
général (ends in -al) → change to -aux
Plural: les généraux

Flashcards

Quick quiz

Q1.What is the plural of 'une maison' (a house)?

Correct answer: A. Maison ends in -on; add -s → maisons.

Q2.Nouns ending in -x, -z, -s in singular are also:

Correct answer: B. These letters already mark plurality — no change needed.

Q3.What is the plural of 'un choix' (a choice)?

Correct answer: B. Choix ends in -x, so it stays the same: choix.

Q4.How do -eux words change in plural?

Correct answer: B. -eux words are already plural in form: un jeu, des jeux.

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Common mistakes

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Adding -s to all nouns for plural. — Correct: Nouns ending in -au, -eau, -eux, -al need special rules; -s, -x, -z don't change.

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Thinking -eux words need -s for plural. — Correct: -eux is already a plural marker; jeu → jeux (no -s added).

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Forgetting that -al usually becomes -aux. — Correct: Most -al nouns change to -aux: mal → maux, journal → journaux.

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Pronouncing singular and plural differently. — Correct: In French, plural is written but often sounds the same (silent letters).

FAQ

What is the basic rule for French plural formation?

Most nouns add -s to the singular. Exceptions: -au/-eau/-eux add -x; -al becomes -aux; -s/-x/-z don't change.

How are French plurals pronounced?

In most cases, the plural sounds the same as the singular because the -s and -x endings are silent.

Do all -al nouns become -aux?

Most do, but a few like 'bal' and 'festival' follow the regular -s rule: bals, festivals.

What about compound nouns?

Compound nouns can be complex; typically only the main noun is pluralized, depending on the noun-noun or adjective-noun combo.