How many letters does the top answer for “capital of czech republic” have?

The most common answer is prague (6 letters).

Crossword clue: capital of czech republic

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

prague 6 letters wd-fact

the capital and largest city of the Czech Republic in the western part of the country; a cultural and commercial center

actor from czech republic 50% similar → chytilova, farna, forman

capital of dominican republic 50% similar → santodomingo

capital of republic of the congo 50% similar → brazzaville

cheese from czech republic 50% similar → balkanskysyr

dish from czech republic 50% similar → christmascarp, wafercookie