- 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.
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
See upside down in the Oxford Advanced American DictionarySee upside down in the Oxford Learner's Dictionary of Academic Englishturn something upside down
- to make a place untidy when looking for something
- The police turned the whole house upside down looking for clues.
- to cause big changes in a person’s life that upset and confuse them
- His sudden death turned her world upside down.
Check pronunciation:
upside down