1. people who are present at an event or incident but are not directly involved
Usage: plural form of bystander

Examples

• Several bystanders called 911 when they saw the accident.
• The police interviewed bystanders who witnessed the robbery.
• Innocent bystanders were injured during the protest.
• The crowd of bystanders watched as firefighters battled the blaze.
• She urged bystanders not to just stand there but to help.
• The speaker asked bystanders to move away from the construction site.
• Many bystanders took photos of the celebrity leaving the restaurant.