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

The most common answer is muscularity (11 letters).

Crossword clue: another word for vigour

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

muscularity 11 letters gen-syn

an imaginative lively style (especially style of writing)

vim 3 letters gen-syn

an imaginative lively style (especially style of writing)

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