Synonyms

live wire

American

[lahyv] / laɪv /

noun

Informal.

an energetic, keenly alert person.

live wire British

/ laɪv /

noun

informal an energetic or enterprising person
a wire carrying an electric current

"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

live wire Idioms

A highly alert or energetic person. For example, Sally's a real live wire; she brightens up any gathering. This metaphoric term transfers a wire carrying electric current to a lively individual. [c. 1900]

Other Word Forms

Noun Inflected Forms

live wires

plural

Etymology

Origin of live wire

An Americanism dating back to 1900–05

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

live wire

Underneath the quiet sits a live wire: the “Magnificent Seven,” nearly left for dead after a punishing first half of 2026, but quietly coming back to life in the past two weeks.

From MarketWatch ● Jul. 19, 2026

I thought I would have become less of a live wire, but that hasn’t happened.

From The Wall Street Journal ● Oct. 21, 2025

The basement of a rowhouse in South Baltimore exploded Saturday morning due to the combustive combination of a live wire and leaking natural gas.

From Washington Times ● Nov. 18, 2023

Mr James, a high-voltage utility line worker from Arkansas, lost most of his face when it accidentally touched a 7,200-volt live wire in 2021.

From BBC ● Nov. 9, 2023

Her harebrained live wire of a daughter, the perpetual overreactor, prone to fits of furious indignation about nothing at all.

From "Little Fires Everywhere" by Celeste Ng

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023