Irregular verb
undo
/ʌnˈduː/
- Base
- undo
- Past simple
- undid
- Past participle
- undone
Usage
undo follows its root verb do exactly: undo, undid, undone.
Meaning
- to reverse an action or open something fastened
Example
She undid the knot carefully.
He undid his top button after the ceremony.
The damage has been undone by the new policy.