Definitions of undoing

1. Reversing what has been done; ruining.

2. Ruin.

3. A making something of no effect; ruin; the act of unfastening.

4. The reversal of what has been done: ruin.

5. Reversal of what has been done; ruin.

6. The reversal of what has been done; ruin: destruction.

7. The reversing of what has been done; ruin.