Merriam-Webster's Collegiate® Dictionary, 11th Edition
DEMUR
I. intransitive verb (demurred; demurring) see: mora
Date: 13th century
delay , hesitate , to file a demurrer, to take exception ; object ,
II. noun
Date: 13th century
hesitation (as in doing or accepting) usually based on doubt of the acceptability of something offered or proposed, the act or an instance of objecting ; protest , see: qualm