le supplémentaire

The French word "supplémentaire" means "additional" or "extra." It describes something that is added beyond what is normal, required, or expected.

Meaning:

• It refers to an added amount, piece, or unit that supplements an original quantity or number.
• Can be used for time (e.g., extra hours), quantities (extra pieces), services (additional support), and more.

Examples:

• Heures supplémentaires = overtime hours (extra working hours beyond the usual schedule)
• Coût supplémentaire = additional cost
• Personnes supplémentaires = extra people

Synonyms and differences:

• Additionnel(le): Also means additional. Often used in a more formal or technical sense (e.g., documents additionnels = additional documents).
• Extra: Borrowed from English, informal, often used colloquially to mean “extra” or "bonus."
• De plus: A phrase meaning "more" or "in addition," often used as a connector rather than an adjective.

In summary, "supplémentaire" conveys a formal, clear idea of something extra or added, often used in administrative, technical, or general contexts.