How many letters does the top answer for “make a shrill creaking noise by rubbing together special bodily structures” have?

The most common answer is clitter (7 letters).

Crossword clue: make a shrill creaking noise by rubbing together special bodily structures

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

clitter 7 letters wn-def

make a shrill creaking noise by rubbing together special bodily structures

stridulate 10 letters wn-def

make a shrill creaking noise by rubbing together special bodily structures