How many letters does the top answer for “(of meat) full of sinews; especially impossible to chew” have?

The most common answer is fibrous (7 letters).

Crossword clue: (of meat) full of sinews; especially impossible to chew

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

fibrous 7 letters wn-def

(of meat) full of sinews; especially impossible to chew

unchewable 10 letters wn-def

(of meat) full of sinews; especially impossible to chew