undo
//ʌnˈduː//
Verb
undoInfinitive
undoPresent tense
undidPast tense
undonePast participle
undoingPresent participle
undoesThird-person singular
1
To reverse or cancel the effects of an action or process.
I pressed the wrong button, but I was able to undo the mistake.
2
To unfasten, untie, or open something that is closed or secured.
She undid the buttons on her coat.
3
To cause the ruin or downfall of someone or something.
His gambling addiction undid his career.