Cataclysmal and Optimistic

Cataclysmal

Cataclysmal adjective - Bringing about ruin or misfortune.
Usage example: a cataclysmal decision to plunge the nation into war

Optimistic is an antonym for cataclysmal.

Optimistic

Optimistic adjective - Having qualities which inspire hope.

Cataclysmal is an antonym for optimistic.

Cite this Source
Optimistic and Cataclysmal. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/cataclysmal/optimistic
Cataclysmal & Optimistic. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/cataclysmal/optimistic>.
Optimistic or Cataclysmal. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/cataclysmal/optimistic.
Google Ngram Viewer shows how "cataclysmal" and "optimistic" have occurred on timeline