'resolutely' originates from the Latin word 'resolutus', where 're-' meant 'again' and 'solvere' meant 'to loosen or release'.

'resolutus' transformed into the Old French word 'resolu', and eventually became the modern English word 'resolute', with 'resolutely' as its adverbial form.

Initially, it meant 'to release or loosen again', but over time it evolved into its current meaning of 'determined and unwavering'.