How many letters does the top answer for “country whose currency is the yemeni rial” have?

The most common answer is yemen (5 letters).

Crossword clue: country whose currency is the yemeni rial

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

yemen 5 letters wd-fact-v3

a republic on the southwestern shores of the Arabian Peninsula on the Indian Ocean; formed in 1990

country whose currency is the rial 75% similar → iran

country whose currency is the iranian rial 60% similar → iran

country whose currency is the omani rial 60% similar → oman