outdoors /aʊtˈdɔː(ɹ)z/noun 2adverb 1 noun2 •The environment outside of enclosed structures.He won't leave his house: he's afraid of the outdoors. •The natural environment in the open air, countryside away from cities and buildings.She loves the outdoors, for its freedom and fresh air. adverb1 •Not inside a house or under covered structure; unprotected; in the open air.They went outdoors to light up their cigarettes.