Futile
Undoable
Undoable adjective - Incapable of being solved or accomplished.
Usage example: a combat mission of that type is not only undoable, it's foolish
Mutual synonyms
Cite this Source
Undoable and Futile. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/futile/undoable
Futile & Undoable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/futile/undoable>.
Undoable or Futile. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/futile/undoable.
Google Ngram Viewer shows how "futile" and "undoable" have occurred on timeline