Definition of upside down in English:

upside down

adjective & adverb

  • 1With the upper part where the lower part should be; in an inverted position.

    [as adverb] ‘the car rolled and landed upside down’
    [as adjective] ‘an upside-down canoe’
    upturned, upended, bottom up, wrong side up, head over heels, inverted, reversed, overturned, capsized, upset, flipped
    View synonyms
    1. 1.1In or into total disorder or confusion.
      [as adverb] ‘burglars have turned our house upside down’


Middle English: originally up so down, perhaps in the sense ‘up as if down’.


upside down