And I must respectfully refuse to believe that ancient books are the last word on the matters treated in them.
Bradlaugh "respectfully refused" to obey an order of the House which was "against the law".
I can admire that philosophy, my lord, but I must respectfully refuse to debate it with you.
I could see on his face that he was trying to puzzle it out, how to politely and respectfully refuse my invitation without offending this important American visitor.
"I must respectfully refuse, Captain."
If you intend to cut off my scalp-lock, I must respectfully refuse.
Carface respectfully refuses, saying he's going to visit his mom, but wishes everyone a Merry Christmas.
He quietly and respectfully refuses to cooperate even at gunpoint, and Worth murders him, with Bumpas casually watching.
I require a positive identification before I can share patient information, so I must respectfully refuse your order.
"As I said, my ship will be leaving momentarily, and as much as your offer might flatter me, I must respectfully refuse."