Preposterous and Undoable

Preposterous

Preposterous adjective - Conceived or made without regard for reason or reality.

Undoable and preposterous are semantically related. In some cases you can use "Undoable" instead an adjective "Preposterous".

Undoable

Undoable adjective - Incapable of being solved or accomplished.
Usage example: a combat mission of that type is not only undoable, it's foolish

Preposterous and undoable are semantically related. Sometimes you can use "Preposterous" instead an adjective "Undoable".
Cite this Source
Undoable and Preposterous. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/preposterous/undoable
Preposterous & Undoable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/preposterous/undoable>.
Undoable or Preposterous. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/preposterous/undoable.
Google Ngram Viewer shows how "preposterous" and "undoable" have occurred on timeline