demur at

demur at (something)

To dispute or contest something. I'm sorry, but I demur at the suggestion that I'm not qualified for this job just because I made one mistake!
See also: demur
Farlex Dictionary of Idioms.

demur at something

to dispute something; to challenge something. I fear I must demur at your suggestion that I am aloof and condescending. Alice demurred at the suggestion that she was late.
See also: demur
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • a run on (something)
  • address (one's) comments to (someone or something)
  • address comments or remarks to
  • address (one's) remarks to (someone or something)
  • a rush on (something)
  • be in it for
  • be pressed for time
  • be pushed for time
  • be not cut out for something
  • be at a disadvantage
References in periodicals archive
'I do not demur at the indictment, if it is made today; however, I want it to be in the presence of my lawyer,' he requested the court.
SC adjourns Babar Awan contempt court case
So, for example, we learn that the party would "root out government waste so that the money we do spend makes a real difference to you and your family" - an aspiration literally nobody would demur at, but without any clear indication how it would be achieved.
THE BRIEFING
A taxonomist might demur at the chalk and cheese nature of the keywords--from specific projects to the founder's biography and mug shot to ftp and email information.
Ducking and diving like a seal, Sutherland Lyall navigates the waters of the web
However, I must register a small demur at the misleading impression conveyed of a more important writer--the author of The Tempest.
Shakespeare and the subaltern