Preposterous and Solemn

Preposterous

Preposterous adjective - So foolish or pointless as to be worthy of scornful laughter.
Usage example: the movie thriller had such a preposterous plot that we were on the edge of our seats snickering

Solemn is an antonym for preposterous.

Solemn

Solemn adjective - Not joking or playful in mood or manner.
Usage example: solemn as a judge

Preposterous is an antonym for solemn.

Cite this Source
Solemn and Preposterous. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/preposterous/solemn
Preposterous & Solemn. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/preposterous/solemn>.
Solemn or Preposterous. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/preposterous/solemn.
Google Ngram Viewer shows how "preposterous" and "solemn" have occurred on timeline