When is the word french capitalized?

In English, the Word French is capitalized when it means the language, a French person or things from France. However, the lowercase is often used for terms that are no longer specifically French. The term "french fries" is usually not capitalized, but opinions vary on french dressing and french curve.

In French, the Word français (French) is not capitalized as an adjective. It is, however, capitalized Français when it means a French person.