onlooker
//ˈɒnˌlʊkər//
Noun
onlookerSingular
onlookersPlural
1
A person who watches something happening without taking part in it; a spectator or bystander.
A crowd of onlookers gathered to watch the street performance.

A person who watches something happening without taking part in it; a spectator or bystander.
A crowd of onlookers gathered to watch the street performance.