'inefficiently-managed' originates from the combination of 'inefficiently' and 'managed'. 'Inefficiently' comes from 'inefficient', which is derived from Latin 'inefficientem', meaning 'not producing the desired effect'. 'Managed' comes from 'manage', which is derived from Italian 'maneggiare', meaning 'to handle'.

'Inefficiently-managed' evolved from the combination of 'inefficiently' and 'managed', which were used separately in Middle English and later combined in modern English.

Initially, 'inefficiently' meant 'not producing the desired effect', and 'managed' meant 'handled or controlled'. Together, they evolved to describe something that is not effectively controlled or organized.