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English definition of “unnerve”

unnerve

verb [T]  /ʌnˈnɜrv/ us  
to make someone feel less confident and slightly frightened: The long silence unnerved him.
unnerving
adjective  /ʌnˈnɜr·vɪŋ/ us  
It’s the way that he stares that I find so unnerving.
(Definition of unnerve from the Cambridge Academic Content Dictionary © Cambridge University Press)
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