Definition of "unmitigated"

Prichard, while keeping school, had the unmitigated gall to teach Greek, although he had never studied the subject.

1891, Exercises of class day of the senior class, Tuesday, June 23, 1891, page 33

In July 1938, that was sufficient to call down contempt and hatred on us, and brand us as men of unmitigated gall.

1944, Teheran: Our Path in War and Peace, page 55

It requires the cunning of a chess master, the planning of a field marshal, the adroitness and polish of a premier of France, or, failing these, the sheer, unmitigated gall of your door-to-door salesman.

1962, How to live with a calculating cat, page 47

"You don't care if people think you an utter blackguard? You don't care if she and your children have to beg their bread?""Not a damn."I was silent for a moment in order to give greater force to my next remark. I spoke as deliberately as I could."You are a most unmitigated cad.""Now that you've got that off your chest, let's go and have dinner."

1919, W[illiam] Somerset Maugham, “ch. 12”, in The Moon and Sixpence, [New York, N.Y.]: Grosset & Dunlap Publishers […]

"The '720' has been out. We were really happy - it tested with no faults. There was a pleasant surprise it was an unmitigated success."

2020 April 22, Richard Clinnick, “We are feeling positive"”, in Rail, page 63