fibrous (adj.)

• capillary
• cartilaginous
• chewy
• cohesive
• coriaceous
• durable
• flossy
• funicular
• gristly
• hairlike
• hairy
• hard
• hardy
• lasting
• leatherlike
• leathery
• resistant
• ropy
• silky
• sinewy
• stiff
• stringy
• strong
• stubborn
• tenacious
• threadlike
• thready
• tough
• untiring
• vigorous
• viscid
• wiry