Involuntary
Involuntary adjective - Done instantly and without conscious thought or decision.
Usage example: breathing is involuntary
Reflex is a synonym for involuntary in automatic topic. In some cases you can use "Reflex" instead an adjective "Involuntary", when it comes to topics like unintentional, planned. popular alternative
Nearby Word: involuntarily
Reflex
Reflex adjective - Without volition or conscious control.
Usage example: a reflex knee jerk
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Synonyms for Reflex
Involuntary is a synonym for reflex in automatic topic. You can use "Involuntary" instead an adjective "Reflex", if it concerns topics such as mechanical, instinctive, planned. popular alternative
Mutual synonyms
Related pairs
- impulsive and involuntary
- impulsive and reflex
- habitual and involuntary
- habitual and reflex
- natural and involuntary
- natural and reflex
- uncontrolled and involuntary
- uncontrolled and reflex
- spontaneous and involuntary
- spontaneous and reflex
- intuitive and involuntary
- intuitive and reflex
- automatic and involuntary
- automatic and reflex
Both words in one sentence
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Involuntary Shapeshifter: When faced with certain danger, Sayeva's reflex is to change into a much smaller form to avoid it.
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Ted notes that "friendship is an involuntary reflex: it just happens, you can't help it."
Source: Friendship Moment -
Aliens has a resounding Large Ham one, apparently as an involuntary reflex whenever he's doing mad science.
Source: Evil Laugh
Cite this Source
Reflex and Involuntary. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/involuntary/reflex
Involuntary & Reflex. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/involuntary/reflex>.
Reflex or Involuntary. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/involuntary/reflex.
Google Ngram Viewer shows how "involuntary" and "reflex" have occurred on timeline