Invalidate
Invalidate verb - To put an end to by formal action.
Undo is a synonym for invalidate in nullify topic. In some cases you can use "Undo" instead a verb "Invalidate", when it comes to topics like render invalid, render null and void.
Undo
Undo verb - To deprive of courage or confidence.
Mutual synonyms
Common collocations
| marriage | invalidate marriage | undo marriage |
| effect | invalidate effect | undo effect |
| development | invalidate development | undo development |
| story | invalidate story | undo story |
| Other words: existence. | ||
Cite this Source
Undo and Invalidate. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/invalidate/undo
Invalidate & Undo. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/invalidate/undo>.
Undo or Invalidate. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/invalidate/undo.
Google Ngram Viewer shows how "invalidate" and "undo" have occurred on timeline