How many letters does the top answer for “of or pertaining to switzerland, or the people of switzerland.” have?

The most common answer is swiss (5 letters).

Crossword clue: of or pertaining to switzerland, or the people of switzerland.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

swiss 5 letters web-def

the natives or inhabitants of Switzerland

of or pertaining to france or the people of france 50% similar → french, gallic