Alien
Alien adjective - Being, relating to, or characteristic of a country other than one's own.
Preposterous and alien are semantically related. In some cases you can use "Preposterous" instead an adjective "Alien".
Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Alien and preposterous are semantically related. Sometimes you can use "Alien" instead an adjective "Preposterous".
Mutual synonyms
Cite this Source
Preposterous and Alien. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/alien/preposterous
Alien & Preposterous. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/alien/preposterous>.
Preposterous or Alien. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/alien/preposterous.
Google Ngram Viewer shows how "alien" and "preposterous" have occurred on timeline