I. (ˈ) ̷ ̷| ̷ ̷ adverb
Etymology: down (III) + stairs, plural of stair
1. : down the stairs : on or to a lower floor
2. aeronautics : on, near, or to the ground
II. adjective
also downstair ˈ ̷ ̷ˌ ̷ ̷
1. : situated on the main, lower, or ground floor of a building
2. : placed at or occupying a lower level
the downstairs television channels
III. (ˈ) ̷ ̷| ̷ ̷ noun plural but singular or plural in construction
1. : the part of the house belowstairs : the lower floor or floors
2. : persons occupying the lower part of a building ; often : the servants of a household
downstairs were shocked at such goings on