Origin: 1175–1225; Middle English demuren < Anglo-French demurer,Old French demorer < Latin dēmorārī to linger, equivalent to dē-de- + morārī to delay, derivative of mora delay
early 13c., "to linger, tarry," from O.Fr. demorer "delay, retard," from L. demorari, from de- + morari "to delay," from mora "a pause, delay." Main modern sense of "raise objections" is first attested 1630s.