1. (adj) upstairs
the part of a building above the ground floor
Antonyms: ground-floor, downstair, downstairs, down the stairs, below, on a lower floor
2. (adverb) upstairs, upstair
on or of upper floors of a building
Synonyms: upstair, upstairs
Antonyms: downstairs, downstair, ground-floor, below, down the stairs, on a lower floor
3. (adverb) upstairs, up the stairs, on a higher floor
on a floor above
Synonyms: on a higher floor, up the stairs, upstairs
Antonyms: downstair, ground-floor, downstairs, down the stairs, on a lower floor, below
4. (adverb) upstairs
with respect to the mind
Synonyms: on a higher floor, up the stairs
Antonyms: downstair, ground-floor, downstairs, on a lower floor, down the stairs, below
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Synonyms and Antonyms of upstairs 
