His nonparticipation in the meeting surprised everyone.

The report analyzed the causes and effects of widespread nonparticipations in community health programs.

Her nonparticipative attitude during the meeting frustrated the rest of the team.

Even as a nonparticipator, she still observed the debate carefully and later offered thoughtful feedback.

The nonparticipators were surprised when the meeting results were announced without them.

During the focus group, nonparticipants were asked to wait in the lobby until the session ended.

The nonparticipant observer sat quietly at the back of the room.

As a nonparticipant, she observed the debate quietly from the back of the room.

The nonparticipating students waited quietly in the hallway while the exam took place.