'efficiently-manufactured' originates from the combination of 'efficiently' and 'manufactured', where 'efficiently' is derived from Latin 'efficientem', meaning 'accomplishing', and 'manufactured' from Latin 'manu factus', meaning 'made by hand'.

'efficiently-manufactured' evolved from the combination of 'efficient' and 'manufacture', which were used separately in Middle English and later combined in modern English.

Initially, 'efficiently-manufactured' referred to items made with skill and care, but now it emphasizes the use of technology and processes to enhance productivity.