The meaning of INVOLUNTARY is done contrary to or without choice. How to use involuntary in a sentence.

INVOLUNTARY definition: not voluntary; independent of one's will; not by one's own choice. See examples of involuntary used in a sentence.

INVOLUNTARY definition: 1. not done by choice; done unwillingly, or without the decision or intention of the person…. Learn more.

1. Acting or done without or against one's will: an involuntary participant in what turned out to be an argument. 2. Not subject to control of the volition: gave an involuntary start.

Definition of involuntary adjective from the Oxford Advanced Learner's Dictionary. an involuntary movement, etc. is made suddenly, without you intending it or being able to control it. happening …

If you make an involuntary movement or exclamation, you make it suddenly and without intending to because you are unable to control yourself. Another surge of pain in my ankle caused me to give an …

Dec 14, 2025 · involuntary (comparative more involuntary, superlative most involuntary) Without intention; unintentional. Not voluntary or willing; contrary or opposed to explicit will or desire; unwilling.

Involuntary describes a reflex or action done without conscious control or will — like a blink, a sneeze, a yawn, or “the giggles.”

in•vol•un•tar•y (in vol′ ən ter′ē), adj. not voluntary; independent of one's will; not by one's own choice: an involuntary listener; involuntary servitude. unintentional; unconscious: an involuntary gesture. …

Synonyms for INVOLUNTARY: accidental, spontaneous, unwilling, unintentional, forced, coerced, unintended, automatic; Antonyms of INVOLUNTARY: voluntary, deliberate, intentional, willing, willful, …