'uncharitably' originates from the prefix 'un-' meaning 'not' and the word 'charitable', which comes from the Latin 'caritabilis', meaning 'dear' or 'costly'.

'charitable' evolved from the Old French word 'charitable', which was derived from the Latin 'caritabilis'. The prefix 'un-' was added to form 'uncharitable', and the adverbial form 'uncharitably' was later developed.

Initially, 'charitable' meant 'dear' or 'costly', but over time it evolved to mean 'generous' or 'kind'. 'Uncharitably' thus means 'not generous or kind'.