sérieux

/se.ʁjø/
1.
adjectivemasculineSing

serious (earnest, not joking)

reliable; conscientious; hardworking

Il est sérieux dans son travail.

He is serious about his work.

Synonyms:fiable, consciencieux, appliqué, grave
2.
nounmasculineSing

seriousness; gravity

reliability

Son sérieux a convaincu les recruteurs.

His seriousness convinced the recruiters.

Synonyms:gravité, sobriété, fiabilité
3.
interjection

Seriously?

Really?

For real?

Sérieux ? Tu vas y aller seul ?

Seriously? You're going alone?

Synonyms:Vraiment ?, Sans blague ?, Tu plaisantes ?

Notes

GENERAL INFO

"Sérieux" is an adjective meaning "serious," "earnest," "reliable," or "important."

USAGE

It describes people or things. For example, "Il est sérieux" (He is serious/reliable) or "C'est une affaire sérieuse" (It's a serious matter). It can also be a noun: "le sérieux de la situation" (the seriousness of the situation).

TRAPS

Remember agreement: "sérieuse" (feminine singular), "sérieux" (masculine plural, same form as masculine singular), "sérieuses" (feminine plural). For "severe" or "critical" (e.g., illness), "grave" is often used instead of "sérieux."