Usage Note
suisse is both the adjective (Swiss) and the noun (un/une Suisse — a Swiss person). It is written with a lowercase -s as an adjective but uppercase as a noun referring to a person. Le fromage suisse and la Suisse romande (French-speaking Switzerland) are common collocations. The idiom boire en suisse means to drink (or do something) alone, on the sly, without sharing.
Examples
"L'horlogerie suisse est réputée dans le monde entier."
Natural Translation
Swiss watchmaking is renowned throughout the world.

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