How many letters does the top answer for “another word for country” have?

The most common answer is commonwealth (12 letters).

Crossword clue: another word for country

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

commonwealth 12 letters gen-syn

a politically organized body of people under a single government

nation 6 letters gen-syn

a politically organized body of people under a single government

another word for about 50% similar → approximately, roughly, some

another word for terms 50% similar → footing

another word for under 50% similar → nether

another word for word 50% similar → phrase

hand over to the authorities of another country 50% similar → extradite