1. not done by choice; involuntary or compulsory

Examples

• The patient’s nonvoluntary muscle contractions were caused by the medication.
• Military service was nonvoluntary during the draft.
• His nonvoluntary departure from the company surprised everyone.
• The nonvoluntary commitment to the psychiatric facility lasted thirty days.
• Breathing is largely a nonvoluntary bodily function.
• The nonvoluntary evacuation affected thousands of residents.