'indifferently-constructed' originates from the combination of 'indifferent' and 'constructed'. 'Indifferent' comes from Latin 'indifferens', meaning 'not different or distinct'. 'Constructed' is derived from Latin 'constructus', meaning 'to heap together'.

'Indifferently' evolved from the Latin 'indifferens', and 'constructed' from 'constructus', eventually forming the modern English term 'indifferently-constructed'.

Initially, 'indifferent' meant 'not different', but over time it evolved to imply a lack of care or concern, which is reflected in the modern usage of 'indifferently-constructed'.