done without a desire, thought or intention; (of muscle, physical action) moving without conscious control
automatic; not done willingly
Cases of word usage
1) (usually plural) a very strong involuntary movement of (parts of) the body (convulsion)
2) a disease causing a person to fall unconscious with violent involuntary movements (epilepsy)
3) a connected series of actions, changes etc, especially if they are involuntary or unconscious; a series of operations deliberately undertaken (process)
4) a sudden and involuntary tightening of a muscle or muscles (spasm)
5) an involuntary twitching of the muscles (especially on the face) (tic)
