- not voluntary; independent of one's will; not by one's own choice: an involuntary listener; involuntary servitude.
- unintentional; unconscious: an involuntary gesture.
- Physiology. acting independently of or done or occurring without volition: involuntary muscles.
Origin of involuntary
SynonymsSee more synonyms for on Thesaurus.com
1, 3. See automatic.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for involuntarily
He obliged and as we stood for the picture my CP caused me to involuntarily tickle him.Gaza to Jersey: A Star is Born
November 25, 2013
Out loud, involuntarily, and I never felt self-conscious about it.‘Killzone: Shadow Fall’ Review: Oh My God, This PlayStation 4 Game Is Beautiful
November 19, 2013
It turns out that even the involuntarily committed find it easy to buy weapons under existing background checks.Even the Dangerously Mental Ill Can Buy Guns
April 30, 2013
She also, understandably, had sought to have Adam involuntarily committed.I Was Adam Lanza
December 22, 2012
The race when Tucker Carlson said he involuntarily crossed his legs whenever he caught sight of Hillary Clinton on television.How Women Managed Historic Victories on Election Day 2012
November 12, 2012
Involuntarily I gave way, and in she crept like a big baby, Biddy coming after.It Happened in Egypt
C. N. Williamson
Then there was a little crack, and Mary involuntarily looked at the lamp chimney.Tiverton Tales
But as she sat "hooking-in," the window was darkened, and involuntarily she lifted her eyes.
She turned the horse about, and involuntarily struck him with her little switch.
Involuntarily he shrank back a pace, to the first step from the top.The Black Bag
Louis Joseph Vance
- carried out without one's conscious wishes; not voluntary; unintentional
- physiol (esp of a movement or muscle) performed or acting without conscious control
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for involuntarily
Online Etymology Dictionary, © 2010 Douglas Harper
- Not subject to control of the volition.
- Acting or done without or against one's will.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Not under conscious control. Most of the biological processes in animals that are vital to life, such as contraction of the heart, blood flow, breathing, and digestion, are involuntary and controlled by the autonomic nervous system.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.