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

The most common answer is castanets (9 letters).

Crossword clue: another word for bones

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

castanets 9 letters gen-syn

(used in the plural) a percussion instrument consisting of a pair of hollow pieces of wood or bone that are made to clic

clappers 8 letters gen-syn

(used in the plural) a percussion instrument consisting of a pair of hollow pieces of wood or bone that are made to clic

another word for bone 100% similar → debone

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