efficientefficient

Efficient comes, via Old French, from Latin efficiēns (accusative efficientem), present participle of efficiō ‘to accomplish’.

1. Latinc. 75 BCE–200 CEefficiō¹as efficere, participle‘to work out, accomplish’
2. Latinc. 75 BCE–200 CEefficiēns¹‘accomplishing’
3. Englishearliest quotation 1614efficient¹

1. ¹ Wiktionary, English efficient
2. Earliest quotation in Wiktionary’s entry: 1614, Walter Ralegh [i.e., Walter Raleigh]: “It was well said of Plotinus, that the stars…”.