undoing
UK /ʌnˈduːɪŋ/ US /ʌnˈduːɪŋ/
noun 3
Definitions
noun
1
The act of loosening or unfastening
2
Ruin; defeat, (also) that which causes defeat or ruin.
In the end, his jealousy was his undoing.
So far as the ape was concerned, Sabor reasoned correctly. The little fellow crouched trembling just an instant, but that instant was quite long enough to prove his undoing.
3
Annulment; reversal
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