'inefficiently-dealt' originates from the combination of 'inefficiently' and 'dealt', where 'inefficiently' is derived from 'inefficient', meaning 'not achieving maximum productivity', and 'dealt' is the past participle of 'deal', meaning 'to handle or manage'.

'inefficiently' evolved from the Latin word 'inefficientem', and 'dealt' comes from the Old English 'dǣlan', meaning 'to divide or distribute'.

Initially, 'inefficiently' meant 'not producing the desired effect', and 'dealt' meant 'to distribute'. Together, they evolved to describe something handled without efficiency.