1. a person who does not take part in an activity, event, or group

1. not taking part in or involved with an activity or event

Examples

• As a nonparticipant in the debate, she remained silent throughout the discussion.
• The nonparticipant observers took notes from the back of the classroom.
• He preferred a nonparticipant role in the team project.
• Nonparticipants were asked to leave the room during the private meeting.
• She maintained a nonparticipant stance on the controversial issue.
• The survey included both participants and nonparticipants in the study.
• Nonparticipant countries were not invited to the summit.