ˌUpstairs, ˈDownstairs
a British television programme of the 1970s, about a rich family and their servants who live in London in the early 1900s. It shows the two different worlds of the upper-class people who live ‘upstairs’ in the main part of the house, and of their servants who live and work in the lower part of the house. People in the UK sometimes use this phrase when comparing the different lives of rich and poor people:
Some economists foresee a return to the Upstairs, Downstairs society of Victorian times.

[TahlilGaran] Dictionary of Contemporary English ▲

I. up‧stairs¹ S2 /ˌʌpˈsteəz◂ $ -ˈsterz◂/ adverb
towards or on an upper floor in a building Antonym : 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 kick¹(16)

[TahlilGaran] Dictionary of Contemporary English ▲

II. upstairs² noun
the upstairs one or all of the upper floors in a building Antonym : the downstairs:
Would you like to see the upstairs?

[TahlilGaran] Dictionary of Contemporary English ▲

upstairs
noun
See DOWNSTAIRS (downstairs)

[TahlilGaran] Dictionary of Common Errors ▲

upstairs
ˈʌpˈstɛəz
See: nobody home upstairs

[TahlilGaran] English Idioms Dictionary ▲