'uninformative' originates from the prefix 'un-' meaning 'not' and the word 'informative', which comes from the Latin 'informare', meaning 'to shape, form, or instruct'.

'informare' transformed into the French word 'informer', and eventually became the modern English word 'informative'. The prefix 'un-' was added to form 'uninformative'.

Initially, 'informare' meant 'to shape or instruct', but over time, 'uninformative' evolved to mean 'not providing useful information'.