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light bulb moment

British  

noun

  1. informal a moment of sudden inspiration, revelation, or recognition

"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

Etymology

Origin of light bulb moment

C20: from the cartoon image of a light bulb lighting up above a character's head when he or she has an idea

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:

On the drive home, Scanlon, 33, had a light bulb moment: “What I love doing is something most people find totally overwhelming and exhausting,” she says.

From Los Angeles Times May 21, 2026

"The filters would be very good insulation, and someone had a light bulb moment and probably bought this as scrap off their manager," he said.

From BBC Mar. 25, 2026

A light bulb moment for a lot of my actors is, I share Russian singing and music, which reflects the speaking rhythms.

From Slate Jul. 24, 2021

The light bulb moment came when the woman who leads my running group, Helen McCaffrey Birney, told us over Zoom that she just doesn’t always wear clean clothes to run.

From New York Times Apr. 16, 2021

FDR's Tennessee Valley Authority program is instructive: You win, make things better for people, and wait for the light bulb moment to arrive.

From Salon Feb. 10, 2021

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