sérieuse

/se.ʁjøz/sérieux
1.
adjectivefeminineSing

serious (solemn, earnest); conscientious, reliable

Elle est très sérieuse : on peut toujours compter sur elle.

She is very responsible/earnest; you can always count on her.

Synonyms:consciencieuse, responsable, fiable, appliquée
2.
adjectivefeminineSing

serious (grave, severe) — used for situations, injuries, illnesses, etc.

Il a une blessure assez sérieuse.

He has quite a serious injury.

Synonyms:grave, sévère, important
sérieuse - French Definition & Examples