French -eux Adjectives from English -ous Words

Level A2

French -eux Adjectives from English -ous Words

Some familiar English adjectives ending in -ous have a French counterpart ending in -eux. In French, the feminine form often ends in -euse, and the adjective changes to agree with the person or thing it describes. The match is only a guide: some words have a different French equivalent, and similar endings can have different meanings.

Recognize familiar -ous and -eux adjectives

adjectif anglais en -ous → adjectif français en {-eux|curious} ; féminin : adjectif français en -euse.

Compare masculine and feminine forms

EnglishFrench masculineFrench feminine
curiouscurieuxcurieuse
serioussérieuxsérieuse
nervousnerveuxnerveuse
dangerousdangereuxdangereuse
generousgénéreuxgénéreuse
deliciousdélicieuxdélicieuse

Learn the French word for “obvious”

Notice exceptions and misleading endings

The -ous → -eux pattern is a helpful clue, but it does not work for every word. “Obvious” is “évident,” and “tremendous” is often “énorme.” French adjectives change to agree with the noun: “évident” becomes “évidente” in “La réponse est évidente.”

“Heureux” means “happy,” not “serious”; its feminine form is “heureuse.” For “serious,” use “sérieux” or “sérieuse” when it fits. French also uses “grave,” as in “C'est un problème grave” and “La situation est grave.” Check a word's meaning instead of relying on a similar ending.

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