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 opposite right side up颠倒;倒转;翻转 Oxford Collocations DictionaryUpside down is used with these verbs:- hang
Word OriginMiddle English: originally up so down, perhaps in the sense ‘up as if down’.
Idioms
turn something upside down