unnerve

[ uhn-nurv ]
/ ʌnˈnɜrv /

verb (used with object), un·nerved, un·nerv·ing.

to deprive of courage, strength, determination, or confidence; upset: Fear unnerved him.

Origin of unnerve

First recorded in 1595–1605; un-2 + nerve
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unnerving

British Dictionary definitions for unnerving

unnerve

/ (ʌnˈnɜːv) /

verb

(tr) to cause to lose courage, strength, confidence, self-control, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012