nonparticipant

[ non-pahr-tis-uh-puh nt ]
/ ˌnɒn pɑrˈtɪs ə pənt /

noun

a person who does not participate.

Origin of nonparticipant

First recorded in 1880–85; non- + participant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019