say it: in-VAH-luhn-ter-ee
involuntary is an adjective meaning "not subject to the control of the will". It carries 2 recorded senses.
not subject to the control of the will
“involuntary manslaughter”
“involuntary servitude”
“an involuntary shudder”
“It (becoming a hero) was involuntary. They sank my boat”
controlled by the autonomic nervous system; without conscious control
“involuntary muscles”
“gave an involuntary start”
physiology
Definitions, synonyms and semantic relations for involuntary come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.