'inefficiently-made' originates from the word 'inefficient,' which comes from Latin, specifically the word 'inefficientem,' where 'in-' meant 'not' and 'efficere' meant 'to accomplish.'

'inefficientem' transformed into the French word 'inefficace,' and eventually became the modern English word 'inefficient' through Middle English.

Initially, it meant 'not accomplishing,' but over time it evolved into its current meaning of 'lacking efficiency.'