This is the 946th most frequent French word.
professionnel
Professional.
Here, 'professionnel' is used as an adjective to describe a person whose occupation is professional athletics.
Il est un athlète professionnel réputé.
He is a renowned professional athlete.
In this case, 'professionnelle' (feminine form) functions as an adjective emphasizing the work-related and competent demeanor.
Elle approche toujours chaque problématique avec une attitude professionnelle.
She always approaches every issue with a professional attitude.
Here, 'professionnels' is used as a plural noun referring to individuals who are experts in their respective fields.