Unnerve
/əˈnɜrv/
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Definition
(verb) To deprive of nerve, force, or strength; to weaken; to enfeeble. Compare enervate.
Sentence Examples
The strange and quiet silence in the old house began to unnerve her.
To unnerve means to cause someone to lose their courage or confidence.
CEFR Practice Quiz
The sudden loud noise was enough to ____ the young child, who started crying and looking for her mother today.