'involuntarily-recovered' originates from the combination of 'involuntarily' and 'recovered'. 'Involuntarily' comes from Latin 'involuntarius', where 'in-' meant 'not' and 'voluntarius' meant 'willing'. 'Recovered' comes from Latin 'recuperare', where 're-' meant 'again' and 'cuperare' meant 'to gain'.

'involuntarily' changed from the Latin word 'involuntarius' and 'recovered' from 'recuperare', eventually forming the modern English term 'involuntarily-recovered'.

Initially, 'involuntarily' meant 'not willing', and 'recovered' meant 'to gain again'. Together, they evolved to mean 'recovered without conscious intention'.