deber
/deˈbeɾ/ · A1 · verb
must, need to, have to
💳 deber = debt + debit: same Latin root debere, to owe
From Latin debere (to owe), the source of English debt, debit and due. What you owe is what you must do, so owing slid into obligation: debo dinero = I owe money, debo ir = I must go. As a noun, el deber = duty.