French Adjectives

Odd Plural Adjectives

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Odd Plurals

Some adjectives have irregular masculine plurals.

For -x and -s ending adjectives, the masculine singular and plural forms are identical.

un moine heureux
a happy monk
des moines heureux
happy monks
un costume gris
grey suit
des costumes gris
grey suits

The feminine plural still adds an s.

une femme courageuse
a courageous woman
des femmes courageuses
courageous women
une journée grise
a grey day
des journées grises
grey days

A few adjectives add -x to form plurals.

Masculine Singular Masculine Plural Definition
hébreu hébreux Hebrew
beau beaux beautiful
nouveau nouveaux new

Most adjectives that end in -al replace the -al with -aux to form the masculine plural.

Masculine Singular Masculine Plural Definition
général généraux general
international internationaux international
légal légaux legal
loyal loyaux loyal
médiéval médiévaux medieval
normal normaux normal
original originaux original
royal royaux royal
social sociaux social

Exceptions:

banal banals commonplace
fatal fatals deadly
natal natals native
naval navals naval