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Definition of Involuntary
1. Adjective. Not subject to the control of the will. "It (becoming a hero) was involuntary. They sank my boat"
Exact synonyms: Nonvoluntary, Unvoluntary
Also: Unconscious, Unwilling
Similar to: Driven, Goaded, Forced, Unconscious, Unwilled, Unwilling
Antonyms: Voluntary
Also: Unconscious, Unwilling
Similar to: Driven, Goaded, Forced, Unconscious, Unwilled, Unwilling
Antonyms: Voluntary
2. Adjective. Controlled by the autonomic nervous system; without conscious control. "Gave an involuntary start"
Category relationships: Physiology
Similar to: Automatic, Reflex, Reflexive, Autonomic, Vegetative
Antonyms: Voluntary
Similar to: Automatic, Reflex, Reflexive, Autonomic, Vegetative
Antonyms: Voluntary
Definition of Involuntary
1. a. Not having will or the power of choice.
Definition of Involuntary
1. Adjective. Without intention; unintentional. ¹
2. Adjective. Not voluntary or willing; contrary or opposed to explicit will or desire; unwilling. ¹
¹ Source: wiktionary.com
Definition of Involuntary
1. [adj]
Medical Definition of Involuntary
1. 1. Not having will of the power of choice. 2. Not under the influence or control of the will; not voluntary; as, the involuntary movements of the body; involuntary muscle fibres. 3. Not proceeding from choice; done unwillingly; reluctant; compulsory; as, involuntary submission. Origin: L. Involuntarius. (28 Oct 1998)