'indifferently-designed' originates from the combination of 'indifferent' and 'designed', where 'indifferent' comes from Latin 'indifferens', meaning 'not different or distinct', and 'designed' from Latin 'designare', meaning 'to mark out'.

'Indifferently-designed' combines the medieval English word 'indifferent' with 'designed', evolving into a modern English term describing something made without care.

Initially, 'indifferent' meant 'not different', but over time it evolved to imply a lack of concern or interest, which is reflected in the phrase 'indifferently-designed'.