To, toward, or in the upper floor(s) of a building; also can mean a higher level or position.
Combination of 'up' (Old English 'upp,' meaning higher in position) and 'stairs' (from Old Norse 'stígr'). This compound emerged as buildings with multiple floors became common in Middle English around the 1300s.
The word 'upstairs' sounds simple, but it reveals something fascinating: humans universally associate 'up' with power and importance—languages across the world use 'up' words for promotion and respect, and 'down' words for demotion and shame.
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