onlooker
Americannoun
noun
Other Word Forms
Derived Forms
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.
Another onlooker, 18-year-old Zoe Perez, was on the verge of tears.
From Barron's • May 6, 2026
The King and Queen arrived last and one onlooker was heard shouting "God bless the King".
From BBC • Apr. 5, 2026
“How’s the weather been?” he asked one onlooker.
From The Wall Street Journal • Mar. 11, 2026
Any rational onlooker would assume that the Trojans had held on for good, dispatching of the Ducks.
From Los Angeles Times • Feb. 21, 2026
I couldn’t be a silent onlooker any longer.
From "Because of Mr. Terupt" by Rob Buyea
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.
