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moonlight

American  
[moon-lahyt] / ˈmunˌlaɪt /

noun

  1. the light of the moon.


adjective

  1. pertaining to moonlight.

  2. illuminated by moonlight.

  3. occurring by moonlight, or at night.

verb (used without object)

  • moonlights,
    present (3rd person singular)
  • moonlighted,
    past participle,  past
  • moonlighting
    present participle
  1. to work at an additional job after one's regular, full-time employment, as at night.

moonlight British  
/ ˈmuːnˌlaɪt /

noun

  1. Also called: moonshine. light from the sun received on earth after reflection by the moon

  2. (modifier) illuminated by the moon

    a moonlight walk

  3. short for moonlight flit

"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

verb

  1. informal (intr) to work at a secondary job, esp at night, and often illegitimately

"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

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Etymology

Origin of moonlight

1325–75; 1950–55 moonlight for def. 5; Middle English monelight


Explanation

Moonlight is literally the light we can see shining from the moon, but to moonlight is to work a second job. Get it? You have to work in the moonlight because there aren’t enough hours in the day. Moonlight is the reflection of the sun off the moon's surface — a clear sky and a full moon provide brilliant moonlight. Smugglers hate moonlight. If you moonlight, you work a second job, and it doesn’t have to be at night. If your history teacher also works as a mascot for a baseball team, he moonlights as a dancing bear. As a verb, it used to mean “commit crimes at night,” but now just means “to work a second job.”

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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:

A new moon means moonlight should not interfere with viewing, creating favourable conditions if skies remain clear.

From BBC ● Aug. 9, 2026

That meant some reflected moonlight from clouds in the lower atmosphere was present, but not enough to overwhelm the much fainter airglow signal.

From Science Daily ● Jun. 3, 2026

Their rapid run up has also at times forced state insurance commissioners to moonlight as forensic accountants, teasing out company relationships.

From The Wall Street Journal ● May 26, 2026

The audience rehashed its hunches, they circled potential suspects, they stared at a static image of a horrific crime scene, awash in twinkling moonlight.

From Slate ● Feb. 23, 2026

Expose the egg to the moonlight for at least three hours, then await the results.

From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville

“His name is Sam. He moonlights as a lawyer too so he was prepping me,” says Jane, deadpan.

From The Wall Street Journal ● Sep. 5, 2026

A brash and confident young earthbending prodigy, Toph moonlights as a champion fighter called the Blind Bandit, unbeknownst to her overprotective upper-class parents who think their little girl is helpless.

From Los Angeles Times ● May 13, 2026

Catriona Byers is a historian who moonlights as a food stylist.

From BBC ● Oct. 10, 2025

Sharon Lowell, a lead equipment operator, moonlights as a beekeeper on her San Juan Island property.

From Seattle Times ● May 26, 2024

Killian, a coal miner who moonlights as an emergency medical technician for the Healy Volunteer Fire Department, had a two- way radio on the Argo.

From "Into the Wild" by Jon Krakauer

But his job was his life, even though he moonlighted as a high school teacher and administrator.

From Los Angeles Times ● Apr. 12, 2026

He moonlighted as an Uber driver to land the lead role advising the ride-sharing company on its 2018 offering.

From The Wall Street Journal ● Feb. 10, 2026

Jimmy Kimmel also received warm reviews in his fourth outing as host, leaving him one away from matching another late-night star who moonlighted at the Oscars, Johnny Carson.

From New York Times ● Mar. 11, 2024

In a recent interview with The Wall Street Journal, Uber CEO Dara Khosrowshahi said his most nightmarish experience with the company occurred when he moonlighted as an Uber delivery driver.

From Salon ● Aug. 22, 2023

He moonlighted as a security guard for a jewelry company.

From "Newjack: Guarding Sing Sing" by Ted Conover

At the time, Oxford had been moonlighting for a sales company that offered welding machines, generators, and other equipment door to door.

From Slate ● Sep. 17, 2026

Busby began moonlighting in the honky tonks and was soon making more money with his mandolin than he could as a fed.

From The Wall Street Journal ● Jul. 31, 2026

As a teenager she was moonlighting as a referee, raising enough money to fund a trip to South Africa to watch the 2010 World Cup as a fan.

From Los Angeles Times ● May 31, 2026

One of his lawyers has been moonlighting as a clown in his downtime, according to Business Insider.

From BBC ● Apr. 28, 2026

Ill Patrolman Mancuso had tried a little moonlighting in his effort to apprehend someone, anyone for the sergeant.

From "A Confederacy of Dunces" by John Kennedy Toole

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