unchewable vs fibrous

unchewable and fibrous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unchewable	No	Yes	No	No
fibrous	No	Yes	No	No

As adjectives, unchewable and fibrous are synonyms defined as:

unchewable and fibrous: (of meat) full of sinews; especially impossible to chew

Other synonyms of unchewable include sinewy, stringy.

unchewable (adjective)	fibrous (adjective)
(of meat) full of sinews; especially impossible to chew	(of meat) full of sinews; especially impossible to chew
	having or resembling fibers especially fibers used in making cordage such as those of jute