Meaning & Definition of word "Involuntary"

Involuntary

/ɪnˈvɒlənˌtɛri/

adjective:

  • 1. Not done by choice; without intention or control.
    • Example: His involuntary reaction to the loud noise startled everyone in the room.
  • 2. Occurring without voluntary control, such as certain bodily functions.
    • Example: Breathing is an involuntary function that continues even during sleep.
  • 3. Not being able to act according to one's own will.
    • Example: She gave an involuntary shudder as the chilly wind passed by.
  • 4. Relating to actions or movements that are reflexive rather than deliberate.
    • Example: The patient's involuntary movements were a result of the neurological disorder.

Etymology

From Latin involuntarius, meaning 'not willing, unintentional'.

Common Phrases and Expressions

involuntary manslaughter:

The unlawful killing of a person without malice aforethought, often as a result of negligence.

involuntary commitment:

The process of admitting an individual to a mental health facility against their will.

involuntary muscle:

Muscle that is not under conscious control, such as the heart muscle.

Related Words

voluntary:

Done by one's own free will.

reflex:

An automatic response to a stimulus.

Slang Meanings of involuntary

Meaning: Unintentional reaction.

Example Sentence: Her jump at the surprise party was totally involuntary.

Meaning: A reflex action.

Example Sentence: That flinch was an involuntary response, not something I meant to do.