unnerve
[verb]
Synonyms: intimidate, demoralize, discourage, dishearten, dismay, faze, fluster, frighten, psych out (informal), rattle (informal), shake, upset

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Antonyms: nerve
Contrasted words: brace (up), inspirit, invigorate, reinforce, strengthen, encourage, hearten, steel
Related Words: enfeeble, sap, undermine, weaken, bewilder, confound, distract, agitate, perturb, upset

[TahlilGaran] English Synonym Dictionary ▲

un‧nerve /ʌnˈnɜːv $ -ɜːrv/ verb [transitive]
[Word Family: adjective: nervous, nerveless, nerve-racking, nervy, unnerving; noun: nerve, nerves, nervousness; verb: nerve, unnerve; adverb: nervously]
to upset or frighten someone so that they lose their confidence or their ability to think clearly:
He was unnerved by the way Sylvia kept staring at him.
—unnerving adjective:
an unnerving experience

[TahlilGaran] Dictionary of Contemporary English ▲