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bystander

American  
[bahy-stan-der] / ˈbaɪˌstæn dər /

noun

  1. a person present but not involved; chance spectator; onlooker.

    Synonyms:
    sidewalk superintendent, rubberneck, witness, passerby, viewer, observer

bystander British  
/ ˈbaɪˌstændə /

noun

  1. a person present but not involved; onlooker; spectator

"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 bystander

First recorded in 1610–20; by- + stand ( def. ) + -er 1 ( def. )

Explanation

Someone who observes an event without taking part in it is a bystander. The police may want to interview any bystanders who witnessed a robbery, to get a description of the robber. A bystander does exactly what the word describes: they stand by, watching what's happening but not participating. You'll often hear the phrase "innocent bystander." For example, a newspaper might report on a fight breaking out after a football game, resulting in injuries to innocent bystanders. Before this word was coined around 1610, stander-by was common.

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Vocabulary lists containing bystander

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.

As this barbershop bystander made clear, for the first time, only a prediction of another championship would be acceptable.

From Los Angeles Times • Mar. 22, 2026

As in other federal assault cases, bystander videos as well as police-camera and surveillance footage cast doubt on agents’ claims, in some cases leading to the exoneration of citizens.

From The Wall Street Journal • Mar. 9, 2026

Goncalves told reporters a bystander "stepped in and interjected" and "that's probably what led to a swift end of this tragic event".

From BBC • Feb. 17, 2026

And, finally, your brother-in-law is not an objective bystander.

From MarketWatch • Feb. 8, 2026

And it made me feel better in some obscure way: imagining myself a hero, rushing fearlessly for the gun, instead of merely loitering in the bullet’s path like the bystander which I so essentially am.

From "The Secret History" by Donna Tartt