Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Unstable and preposterous are semantically related. In some cases you can use "Unstable" instead an adjective "Preposterous".
Unstable
Unstable adjective - Not being in or able to maintain a state of balance.
Preposterous and unstable are semantically related. Sometimes you can use "Preposterous" instead an adjective "Unstable".
Nearby Word: unstably
Mutual synonyms
Cite this Source
Unstable and Preposterous. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/preposterous/unstable
Preposterous & Unstable. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/preposterous/unstable>.
Unstable or Preposterous. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/preposterous/unstable.
Google Ngram Viewer shows how "preposterous" and "unstable" have occurred on timeline