'ineffectively-manufactured' originates from the combination of 'ineffectively' and 'manufactured'. 'Ineffectively' comes from the Latin 'ineffectivus', meaning 'not producing the desired effect', and 'manufactured' comes from the Latin 'manu factus', meaning 'made by hand'.

'Ineffectively' evolved from the Latin 'ineffectivus' through Old French 'ineffectif', while 'manufactured' evolved from 'manu factus' through Middle English 'manufatured'.

Initially, 'ineffectively' meant 'not producing the desired effect', and 'manufactured' meant 'made by hand'. Over time, 'ineffectively-manufactured' came to describe products made without quality or effectiveness.