indoors

from WordNet (r) 3.0 (2006)

indoors
    adv 1: within a building; "in winter we play inside" [syn:
           {inside}, {indoors}] [ant: {alfresco}, {out of doors},
           {outdoors}, {outside}]

from The Collaborative International Dictionary of English v.0.48

Indoors \In"doors`\, adv.
   Within the house; -- sometimes separated, {in doors}.
   [1913 Webster]

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