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English definition of “upside down”

upside down

adjective, adverb [not gradable]    /ˈʌpˌsɑɪd ˈdɑʊn/
having the part that is usually at the top turned to be at the bottom : He put the pots upside down on a dish towel to let them dry .
(Definition of upside down adjective, adverb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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