muff up

verb

muff up

verb

1

To mess up; to botch

"You're tying my hands," complained Tommy. "It's a very delicate affair, and the other fellow will muff it up as likely as not, and then where shall I be? I don't believe one of you has got an ounce of tact."1922, Agatha Christie, “Chapter 16”, in The Secret Adversary:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.