Yes, undoings is a Scrabble word!

Verb

1. Cancel, annul, or reverse an action or its effect

2. Deprive of certain characteristics

3. Cause the ruin or downfall of

4. Cause to become loose

5. Remove the outer cover or wrapping of

Noun

1. An act that makes a previous act of no effect (as if not done)

2. Loosening the ties that fasten something; the untying is easy"