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

The most common answer is plangency (9 letters).

Crossword clue: another word for sonorousness

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

plangency 9 letters gen-syn

having the character of a loud deep sound; the quality of being resonant

sonority 8 letters gen-syn

having the character of a loud deep sound; the quality of being resonant

vibrancy 8 letters gen-syn

having the character of a loud deep sound; the quality of being resonant

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