Simple Definition of onlooker
: a person who watches an activity or event without being involved in it
Full Definition of onlooker
: one that looks on; especially : a passive spectator
Examples of onlooker
Curious onlookers watched the ceremony.
An onlooker noticed the disturbance.
A crowd of onlookers gathered at the fire.
First Known Use of onlooker
Rhymes with onlooker
ONLOOKER Defined for Kids
Seen and Heard
What made you want to look up onlooker? Please tell us where you read or heard it (including the quote, if possible).