Synonyms of involuntary
1 unintentionalDictionary • A surge of pain caused me to give an involuntary shudder.
unintentional • There are moments of unintentional humour.
automatic • the automatic body functions, such as breathing
unconscious • ‘You're well out of it,’ he said with unconscious brutality.
spontaneous • I joined in the spontaneous applause.
reflex • I turned to look inside the house in a reflex action.
instinctive • It's an instinctive reaction. If a child falls you pick it up.
unthinking • Bruce was no unthinking vandal.
blind • The poor man went into a blind panic.
2 compulsoryDictionary • Involuntary repatriations began this week.
compulsory • Many young men are trying to get away from compulsory military conscription.
forced • a system of forced labour
mandatory • Attendance is mandatory.
required • This book is required reading.
binding • a legally binding commitment
imperative • It's imperative to know your rights at such a time.
obligatory • Third-party insurance is obligatory when driving in Italy.
requisite • She filled in the requisite paperwork.
de rigueur (French) • T-shirts now seem almost de rigueur in even the smartest places.
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automaticAn automatic action is one that you do without thinking about it.
• the automatic body functions, such as breathing
bindingA binding promise, agreement, or decision must be obeyed or carried out.
• a legally binding commitment
• The poor man went into a blind panic.
Thesaurus for involuntary from the Collins English Thesaurus
carried out without one's conscious wishes; not voluntary; unintentional