professional
The word 'professionnel' in French is used to describe someone who is skilled or experienced in a particular field or occupation. It can also be used to describe a job or occupation itself, as in 'un emploi professionnel'. The term is often used to distinguish between amateur and professional levels of skill or experience. For example, a 'footballeur professionnel' is a professional soccer player, while a 'footballeur amateur' is a player who does not receive payment for their participation in the sport.
He is very professional in his work.
This sentence is an example of an adjective use of 'professionnel' to describe someone's manner or behavior. The word is placed after the verb 'est' (is) and the noun it modifies, aligning with the French word order in such a context.
This is a professional course.
In this instance, 'professionnel' is used as an adjective to describe the nature or level of the 'cours' (course). When 'professionnel' is used this way, it usually refers to something related to employment or specialized field.
I want to become a professional athlete.
Here, 'professionnel' is an adjective modifying 'sportif' (athlete). When used in such a context, 'professionnel' tends to mean someone engaged in a specific activity as their main paid occupation rather than as a pastime, hence 'sportif professionnel' is a professional athlete.