Definitions of upstairs:
- adjective: on or of upper floors of a building
Example: "The upstairs maid"
- adverb: on a floor above
Example: "They lived upstairs"
- adverb: with respect to the mind
Example: "She's a bit weak upstairs"
Example: "The upstairs maid"
Example: "They lived upstairs"
Example: "She's a bit weak upstairs"