'unenthusiastically-designed' originates from the prefix 'un-' meaning 'not,' combined with 'enthusiastically,' derived from 'enthusiasm,' which comes from the Greek word 'enthousiasmos,' meaning 'inspiration or possession by a god.' 'Designed' comes from the Latin 'designare,' meaning 'to mark out.'

'Enthousiasmos' transformed into the French word 'enthousiasme,' and eventually became the modern English word 'enthusiasm.'

Initially, 'enthusiasm' meant 'inspiration or possession by a god,' but over time it evolved into its current meaning of 'intense and eager enjoyment or interest.'