verb
undo
To bring someone or something to ruin or failure.
His carelessness undoes years of careful work.
Etymology
Undo reverses what has been done. In the ruin sense, it figuratively dismantles the success, security, or standing someone had built.
More examples
- One dishonest decision undid her career.
- The team was undone by repeated defensive errors.
- Their own ambition threatened to undo them.
Forms
undo · undoes · undid · undone · undoing
undoing noun — the cause of ruin or failure