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English definition of “numb”

numb

adjective [-er/-est only]  /nʌm/ us  
(of a part of the body) unable to feel anything: My fingers are so cold, they’re numb. If you are numb with a strong emotion, you are not able to feel anything else or to think clearly: At the sound of breaking glass, she went numb with fear.
numbness
noun [U]  /ˈnʌm·nəs/ us  
(Definition of numb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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