What does unnerve mean?
Unnerve is a transitive verb meaning to make someone nervous or unsettled, especially by depriving them of confidence or composure. An event or prospect can therefore be “unnerving,” while a person may feel “unnerved” after hearing alarming news. The word is more strongly suggestive than a simple synonym such as unsettle: it evokes a loss of nerve, the mental steadiness that allows someone to act confidently. In reporting and analysis, “unnerving” often describes developments that are threatening without being openly violent, such as a sudden downturn, a security breach, or a troubling medical result. Although it can sound formal in careful prose, it remains broadly understandable in British and American English. Unnerve is also useful as a direct alternative to phrases such as “put someone on edge” or “make someone afraid.” Its transparent formation from un- and nerve makes its meaning immediately accessible: to unnerve is to take away a person’s steadiness of mind.
verbTo cause someone to lose their nerve, confidence, or composure; to make nervous or unsettled.
- To make someone nervous, unsettled, or less confident.
"The possibility of a prolonged investigation unnerved the company."
"The uncertainty surrounding the election unnerved voters across the country."
"She remained unnerved by the criticism and calmly answered every question."
To unnerve is literally to take away someone's nerve: even the strongest resolve can be shaken by the right news.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unnerve come from?
Unnerve was formed in English in the early 19th century by combining the prefix un- with the noun nerve. The meaning developed from the idea of removing a person's nerve or confidence. Nerve ultimately comes through Old French from Latin nervus, meaning “sinew,” “tendon,” or “nerve,” the same ultimate root found in words such as nervous, neural, and neuron.
Related word forms
How unnerve is actually used
The word is common in formal and journalistic English but is also natural in everyday speech. It usually implies a serious or persistent disturbance rather than a momentary surprise.