This is the 1831st most frequent French word.
fondateur
Founder.
In this sentence, 'fondateur' is a noun meaning founder, used to describe a person who establishes an entity or group.
Jean est le fondateur de cette organisation.
Jean is the founder of this organization.
Here, 'fondateur' is used as an adjective, describing something foundational or fundamental to a concept or structure.
Cette idée est la pierre fondateur de notre méthode.
This idea is the founding stone of our method.
In this instance, the word is transformed ('fondatrices') to agree as an adjective in gender and number with the noun it modifies (valeurs).