Meaning of 'upstairs'

noun

the part of a building above the ground floor

Example: "no one was allowed to see the upstairs"

adverb

on a floor above

Example: "they lived upstairs"

Synonyms: up the stairs

adverb

with respect to the mind

Example: "she's a bit weak upstairs"

adjective

on or of upper floors of a building

Example: "the upstairs maid"

Synonyms: upstair