upstairs Meaning, Definition & Usage

1. noun the part of a building above the ground floor
   
   • no one was allowed to see the upstairs
2. adjective on or of upper floors of a building
   upstair.
   
   • the upstairs maid
   • an upstairs room
3. adverb on a floor above
   on a higher floor; up the stairs.
   
   • they lived upstairs
4. adverb with respect to the mind
   
   • she's a bit weak upstairs

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