English

Definition of upside down adverb from the Oxford Advanced Learner's Dictionary

  

upside down

 adverb
adverb
BrE BrE//ˌʌpsaɪd ˈdaʊn//
 
; NAmE NAmE//ˌʌpsaɪd ˈdaʊn//
 
 
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  • in or into a position in which the top of something is where the bottom is normally found and the bottom is where the top is normally found The canoe floated upside down on the lake. opposite right side up
  • Word Origin Middle English: originally up so down, perhaps in the sense ‘up as if down’.Idioms
      turn something upside down
       
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    1. 1to make a place untidy when looking for something The police turned the whole house upside down looking for clues.
    2. 2to cause large changes and confusion in a person’s life His sudden death turned her world upside down.

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