out of doors

• out of door (obsolete)

out of doors

1. (dated) Alternative form of outdoors: Not inside any building.

   You are allowed to smoke out of doors.

   The cat was out of doors, seemingly enjoying the sun.

   • 1815 [1802], William Wordsworth, Resolution and Independence:

     All things that love the sun are out of doors; / The sky rejoices in the morning's birth;