Definify.com

Webster 1913 Edition

Adj.

[L.

involuntarius

. See

not, and

Not having will or the power of choice.

Not under the influence or control of the will; not voluntary;

as, the

involuntary

movements of the body;

involuntary

muscle fibers.

Adj.

[L. in and voluntarius. See Voluntary.]

Not having will or choice; unwilling.

Independent of will or choice. The motion of the heart and arteries is involuntary, but not against the will.

Not proceeding from choice; not done willingly; opposed to the will. A slave and a conquered nation yield an involuntary submission to a master.