Definition of live wire in English:

live wire

Line breaks: live wire

noun

informal
An energetic and unpredictable person.
More example sentences
  • There is some truth to the profile of fighter pilots as, well, live wires and risk-takers.
  • Beatrice, our youngest, has been harder than the other three put together - she's such a live wire.
  • Thomas was a real live wire, always on the go and cared about everybody, especially his brothers.
Synonyms
energetic person
informal ball of fire, fireball, human dynamo, busy bee, eager beaver, go-getter, whizz-kid, mover and shaker, powerhouse, life and soul of the party, tiger, demon

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