I. up ‧ stairs 1 S2 /ˌʌpˈsteəz◂ $ -ˈsterz◂/ BrE AmE adverb
towards or on an upper floor in a building OPP downstairs :
I went upstairs and had a shower.
She’s upstairs in bed feeling ill.
—upstairs adjective [only before noun] :
an upstairs window
the upstairs rooms
⇨ kick somebody upstairs at ↑ kick 1 (16)
II. upstairs 2 BrE AmE noun
the upstairs one or all of the upper floors in a building OPP the downstairs :
Would you like to see the upstairs?