undo

US /ʌnˈduː/

UK /ʌnˈduː/

1.

unfasten, untie, or unwrap (something)

:

•

Can you help me undo this knot?

•

She carefully undid the buttons on her coat.

:

unfasten untie unbutton unzip unclasp

:

do fasten tie wrap

2.

cancel or reverse the effect or result of (a previous action or decision)

:

•

I wish I could undo what I said.

•

The software allows you to undo your last action.

:

reverse cancel negate nullify revoke

:

do perform execute