I. de ‧ mur 1 /dɪˈmɜː $ -ˈmɜːr/ BrE AmE verb ( past tense and past participle demurred , present participle demurring ) [intransitive]
[ Date: 1200-1300 ; Language: Old French ; Origin: demorer , from Latin morari 'to stay, delay' ]
to express doubt about or opposition to a plan or suggestion:
They demurred politely, but finally agreed to stay.
II. demur 2 BrE AmE noun [uncountable]
disagreement or disapproval
without demur
I agreed to this without demur.