'unrestrictedly' originates from the prefix 'un-' meaning 'not', combined with 'restricted', which comes from Latin 'restringere', meaning 'to bind back'.

'restringere' transformed into the Old French word 'restreindre', and eventually became the modern English word 'restrict'. The prefix 'un-' was added to form 'unrestricted', and the adverbial suffix '-ly' was added to form 'unrestrictedly'.

Initially, 'restrict' meant 'to bind back', but over time it evolved into its current meaning of 'to limit'. 'Unrestrictedly' thus means 'without limits'.