'justly-carried' originates from the English words 'justly' and 'carried', where 'justly' means 'in a fair manner' and 'carried' means 'executed or performed'.

'justly' and 'carried' have been used in English since the Middle Ages, and their combination into 'justly-carried' is a modern construct to describe actions done fairly.

Initially, 'justly' meant 'in accordance with justice', and 'carried' meant 'to bear or support'. Together, they evolved to describe actions performed fairly.