1 adj If you make an involuntary movement or exclamation, you make it suddenly and without intending to because you are unable to control yourself.
Another surge of pain in my ankle caused me to give an involuntary shudder.
involuntarily adv ADV with v
His left eyelid twitched involuntarily.
2 adj You use involuntary to describe an action or situation which is forced on someone.
...insurance policies that cover involuntary unemployment...
Translation English Cobuild Collins Dictionary
1 compulsory, forced, obligatory, reluctant, unwilling
2 automatic, blind, conditioned, instinctive, instinctual, reflex, spontaneous, unconscious, uncontrolled, unintentional, unthinking
1 optional, unconstrained, volitional, voluntary, willing
2 calculated, deliberate, intentional, planned, purposed, wilful
English Collins Dictionary - English synonyms & Thesaurus
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