Source : WordNet®

nonvoluntary
     adj : not subject to the control of the will; "involuntary
           manslaughter"; "involuntary servitude"; "an involuntary
           shudder"; "It (becoming a hero) was involuntary. They
           sank my boat"- John F.Kennedy [syn: {involuntary}, {unvoluntary}]
           [ant: {voluntary}]