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English to English noun
| 1 |
an act that makes a previous act of no effect (as if not done) |  | source: wordnet30
| 2 |
loosening the ties that fasten something | | Example: the tying of bow ties is an art; the untying is easy
source: wordnet30
| 3 |
The reversal of what has been done. | | source: webster1913
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