'unpreferably' originates from the prefix 'un-' meaning 'not' and the word 'preferably', which comes from the Latin 'praeferre', meaning 'to carry in front'.

'Preferably' evolved from the Latin 'praeferre' through Old French 'preferer', and eventually became the modern English word 'prefer'.

Initially, 'prefer' meant 'to carry in front', but over time it evolved into its current meaning of 'to like better'.