noun
EXAMPLES FROM CORPUS
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If you fall into this trap, it will be your own doing - and your undoing .
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It was not until March in 1782 that the brothers made the error that was the beginning of their undoing .
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Like Samson, the secret of her strength was her undoing .
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Such confidence was to be their undoing , and that of the Elves.
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The knots took some undoing and then finally an impatient Adam tore off the string before slowly removing the muslin.
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Top weight and soft ground proved his undoing but he ran an absolute cracker to finish third to Sibton Abbey.