English adjective: involuntary
|1.||involuntary not subject to the control of the will|
An involuntary shudder.
It (becoming a hero) was involuntary. They sank my boat.
|Similar||driven, forced, goaded, unconscious, unwilled, unwilling|
|See also||unconscious, unwilling|
|2.||involuntary controlled by the autonomic nervous system; without conscious control|
Gave an involuntary start.
|Similar||automatic, autonomic, reflex, reflexive, vegetative|