E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
There is a somewhat strange connection between de-feat and de-feature. Defeat is the French de-fait, un-made or un-done, Latin, de-factus (defectus, our defect); and feature is the Norman faiture, Latin factura, the make-up, frame, or form. Hence old writers have used the word defeat to mean disfigure or spoil the form.
Defeat thy favour [face] with an usurped beard.Shakespeare: Othello, i. 3.