onlooker
Americannoun
noun
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of onlooker
Explanation
An onlooker is someone who watches something but isn't directly involved in it. The spectators at a boxing match or a dog show or a marathon are all onlookers. If you observe an event but you don't participate in it, you're an onlooker. The event itself might be a performance of some kind, like a concert or a football match, or it might be some undesirable occurrence: "The firefighters battled the blaze while onlookers watched in horror." Onlooker dates from the early seventeenth century, from the sense of "looking on."
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.
When she is cast off the bridge, an onlooker screams at the instructors to attach her cord.
From BBC • Jun. 15, 2026
“I’m just trying to go to dinner,” she tells the camera in a video captured by an onlooker, “and I’ve asked these people several times to get away from me.”
From Los Angeles Times • Mar. 22, 2026
Sunday's spectacle drew crowds of hundreds, with onlooker Richard Bode, 34, calling the event a "once-in-a-lifetime experience."
From Barron's • Jan. 25, 2026
An onlooker warned the agents, “You gonna let him die.”
From Salon • Jan. 14, 2026
It was just the way she said it, suddenly so false even an onlooker, if there’d been one, would have seen through it.
From "Never Let Me Go" by Kazuo Ishiguro
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
