Definition of "durned"

Take the durned thing away.

1912, Kate Langley Bosher, The Man in Lonely Land‎

I liked your nerve, too, durned if I didn't!"

1916, Fannie Hurst, Every Soul Hath Its Song‎

All four are hoping to enjoy some quiet time at the women's bass fishing tournament, but durned if wimpy Talmadge and grumpy Mel don't tag along and upset everything.

1995 April 28, Mary Shen Barnidge, “Zara Spook and Other Lures”, in Chicago Reader‎