This is the 1387th most frequent French word.
supérieur
"Supérieur" means "superior" or "higher" in English.
The word 'supérieure' is used as an adjective here, modifying 'quality' to indicate its higher or better nature compared to others.
Ce produit est de qualité supérieure.
This product is of superior quality.
Here, 'supérieur' is used as a noun, referring to a person in a position of authority or rank above the speaker.
Mon supérieur hiérarchique a approuvé la proposition.
My hierarchical superior approved the proposal.
In this sentence, 'supérieur' is used as an adjective, describing a level in a hierarchy or range that is higher or advanced compared to others.