Irregular Agreements
French: Cambridge International GCSE, topic 8.8.2
Irregular Agreements
For some words, you don't just add 'es' or 's'. They have irregular plural agreements.

Ending in 'x'
- When adjectives end in 'x' in the masculine singular, the feminine singular and plurals are irregular too.
- Heureux - happy.
- Heureux - masculine singular.
- Heureux - masculine plural.
- Dangeureux - dangerous.
- Dangereuse - feminine singular.
- Dangereuses - feminine plural.

Ending in 'on', 'en', 'el', 'il'
- When adjectives end in 'on', 'en', 'el' or 'il' in the masculine singular, the feminine singular and plural are irregular.
- Bon - good.
- Bon - masculine singular.
- Bons - masculine plural.
- Bonne - feminine singular.
- Bonnes - feminine plural.

Ending in 'er'
- When adjectives end in 'er' the feminine singular and plural are irregular.
- Premier - first.
- Premier - masculine singular.
- Premiers - masculine plural.
- Première - feminine singular.
- Premières - feminine plural.

Ending in 'f'
- When adjectives end in 'f' the feminine singular and plural are irregular.
- Sportif - sporty.
- Sportif - masculine singular.
- Sportifs - masculine plural.
- Sportive - feminine singular.
- Sportives - feminine plural.

Ending in 'c'
- When adjectives end in 'c' the feminine singular and plural are irregular.
- Blanc - white.
- Blanc - masculine singular.
- Blancs - masculine plural.
- Blanche - feminine singular.
- Blanches - feminine plural.
Test yourself on Irregular Agreements
Comment dites-vous 'heureux' au féminin pluriel?
How do you say 'they are sporty' in French?