sturdy UK /ˈstɜːdi/US /ˈstɜrdi/adjective 4noun 1forms 2 adjective4 •Of firm build; stiff; stout; strong.He was not of any delicate contexture; his limbs rather sturdy then dainty. — 1657 •Solid in structure or person.It was a sturdy building, able to withstand strong winds and cold weather.The dog was sturdy and could work all day without getting tired. •Resolute, in a good sense; or firm, unyielding quality. •(no longer used) Foolishly obstinate or resolute; stubborn.This must be done, and I would fain see / Mortal so sturdy as to gainsay. — 1662 noun1 •A disease caused by a coenurus infestation in the brain of an animal, especially a sheep or canid; coenurosis. formssturdier · sturdiest