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Definition of Onlooker
1. Noun. Someone who looks on. 
Definition of Onlooker
1. n. A looker- on.
Definition of Onlooker
1. a spectator [n -S] - See also: spectator
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1. Noun. Someone who looks on. 
1. n. A looker- on.
1. a spectator [n -S] - See also: spectator