[syn: outside, outdoors, out of doors, alfresco]
The Collaborative International Dictionary of English v.0.48:
Outdoors \Out"doors`\, adv.
   Out of the house; out of doors; in the open air; abroad.
   [1913 Webster +PJC]
WordNet (r) 3.0 (2006):
outdoors
    adv 1: outside a building; "in summer we play outside" [syn:
           outside, outdoors, out of doors, alfresco] [ant:
           indoors, inside]
    n 1: where the air is unconfined; "he wanted to get outdoors a
         little"; "the concert was held in the open air"; "camping
         in the open" [syn: outdoors, out-of-doors, open air,
         open]