devoir/dəˈvwɑː/EtymologyFrom Middle English devoir, borrowed from Middle French devoir, from Old French deveir, from Latin dēbēre (“to owe; ought, must”).nounDuty, business; something that one must do.“[…] he imprint not so much in his schollers mind […] where Marcellus died, as because he was unworthy of his devoire he died there[…].”