Answer: stringiest

AnswerCrossword Clue
stringiest(of a liquid) Viscous; forming strings
stringiest(esp. of hair) Resembling string; long, thin, and lusterless
stringiestSTRINGY, fibrous (resembling fibres (a threadlike cell or filament, also FIBER))
stringiest(of food) Containing tough fibers and so hard to eat
stringiest(of a person) Tall, wiry, and thin