stur·dy / ˈstərdē/ • adj. (-di·er, -di·est) (of a person or their body) strongly and solidly built: he had a sturdy, muscular physique. ∎ strong enough to withstand rough work or treatment: the bike is sturdy enough to cope with bumpy tracks. ∎ showing confidence and determination: the townspeople have a sturdy independence.• n. vertigo in sheep caused by a tapeworm larva encysted in the brain.DERIVATIVES: stur·died adj. (from the noun)stur·di·ly / -dl-ē/ adv.stur·di·ness n.