Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “live wire”

live wire

noun [C]  /ˈlɑɪv ˈwaɪr/
someone who is very energetic and has an enthusiastic personality : My sister was the live wire and I was always called "the quiet one."
(Definition of live wire noun from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definitions of “live wire” in other dictionaries

Translations of “live wire”

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More