'indifferently-formed' originates from the combination of 'indifferent' and 'formed', where 'indifferent' meant 'without interest or concern' and 'formed' meant 'having a particular shape or structure'.

'Indifferent' changed from the Latin word 'indifferens' and 'formed' from the Old English 'formian', eventually becoming the modern English word 'indifferently-formed'.

Initially, 'indifferent' meant 'not different or distinct', but over time it evolved into its current meaning of 'without interest or concern'.