OUTDOORS
outside, outdoors, out of doors, alfresco
(adverb) outside a building; “in summer we play outside”
outdoors, out-of-doors, open air, open
(noun) where the air is unconfined; “he wanted to get outdoors a little”; “the concert was held in the open air”; “camping in the open”
Source: WordNet® 3.1
Adverb
outdoors (not comparable)
Not inside a house or under covered structure; unprotected; in the open air.
Noun
outdoors (uncountable)
(often preceded by "the") The environment outside of enclosed structures.
(often preceded by "the") The natural environment in the open air, countryside away from cities and buildings.
Antonyms
• indoors
Source: Wiktionary
Out"doors`, adv.
Definition: Abread; out of the house; out of doors.
Source: Webster’s Unabridged Dictionary 1913 Edition