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WordReference Random House Learner's Dictionary of American English © 2024in•vol•un•tar•y /ɪnˈvɑlənˌtɛri/USA pronunciation adj. - not voluntary; independent of one's will:an involuntary witness to the crime.
- unintentional;
unconscious:an involuntary gesture. - Physiologyacting or functioning without the will:[usually: before a noun]an involuntary muscular response.
in•vol•un•tar•i•ly /ɪnˈvɑlənˌtɛrəli, -ˌvɑlənˈtɛr-/USA pronunciation adv. in•vol•un•tar•i•ness, n. [uncountable]See -vol-. WordReference Random House Unabridged Dictionary of American English © 2024in•vol•un•tar•y (in vol′ən ter′ē),USA pronunciation adj. - not voluntary; independent of one's will;
not by one's own choice:an involuntary listener; involuntary servitude. - unintentional;
unconscious:an involuntary gesture. - Physiologyacting independently of or done or occurring without volition:involuntary muscles.
- Late Latin involuntārius. See in-3, voluntary
- 1525–35
- 1, 3.See corresponding entry in Unabridged See automatic.
- 2.See corresponding entry in Unabridged instinctive.
- 3.See corresponding entry in Unabridged reflex, uncontrolled.
- 2.See corresponding entry in Unabridged intentional.
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