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English definition of “defy”

defy

verb [T]  /dɪˈfɑɪ/ us  
to refuse to obey or to do something in the usual or expected way: They defied an evacuation order and stayed in town during the hurricane. He defied the odds (= did what no one expected) and won the race for mayor.
defiant
adjective  /dɪˈfɑɪ·ənt/ us  
She is defiant, angry, and tough.
defiantly
adverb  /dɪˈfɑɪ·ənt·li/ us  
When I said she might fail, she replied defiantly, “No, I won’t!”
(Definition of defy from the Cambridge Academic Content Dictionary © Cambridge University Press)
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