involuntary


in·vol·un·tary

adjective \(ˌ)in-ˈvä-lən-ˌter-ē, -ˌte-rē\

: not done or made consciously

: not done by choice

Full Definition of INVOLUNTARY

1
:  done contrary to or without choice
2
3
:  not subject to control of the will :  reflex
in·vol·un·tari·ly \-ˌvä-lən-ˈter-ə-lē, -ˈte-rə-\ adverb
in·vol·un·tari·ness \-ˈvä-lən-ˌter-ē-nəs, -ˌte-rē-\ noun

Examples of INVOLUNTARY

  1. Breathing and circulation are involuntary processes.
  2. When the door burst open, she let out an involuntary shriek.
  3. The lawyer argued that the client's confession was involuntary.

Origin of INVOLUNTARY

Middle English involuntari, from Late Latin involuntarius, from Latin in- + voluntarius voluntary
First Known Use: 15th century

in·vol·un·tary

adjective \(ˈ)in-ˈväl-ən-ˌter-ē\   (Medical Dictionary)

Medical Definition of INVOLUNTARY

: not subject to control of the will : reflex <involuntary contractions>

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