- 1an involuntary movement, etc. is made suddenly, without you intending it or being able to control it an involuntary cry of pain opposite voluntary
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- 2happening without the person concerned wanting it to the involuntary repatriation of immigrants involuntary childlessness
NAmE//ɪnˌvɑlənˈtɛrəli//
adverbSee involuntary in the Oxford Advanced Learner's DictionaryCheck pronunciation: involuntary