'recklessly-managed' originates from the combination of 'reckless' and 'manage'. 'Reckless' comes from Old English 'reccelēas', where 'recc' meant 'care' and '-lēas' meant 'without'. 'Manage' comes from Italian 'maneggiare', meaning 'to handle'.

'reckless' changed from Old English 'reccelēas' to Middle English 'rekles', and eventually became the modern English word 'reckless'. 'Manage' evolved from Italian 'maneggiare' to French 'maneger', and then to the modern English 'manage'.

Initially, 'reckless' meant 'careless', and 'manage' meant 'to handle'. Over time, 'recklessly-managed' evolved to mean 'managed without care'.