Undo
Definition 1 of 4
Pro Tip 1/3
Metaphorical Use
The term 'undo' can suggest fixing errors, not just computing actions. The new policy might undo years of progress in education.
Pro Tip 2/3
Time Sensitivity
Using 'undo' implies a wish to go back in time and change what happened. If I could, I'd undo what I said yesterday.
Pro Tip 3/3
Irreversible Actions
'Undo' cannot always be applied; some actions are permanent. Once spoken, harsh words can't be undone.