Calamitous
Calamitous adjective - Bringing about ruin or misfortune.
Usage example: a calamitous decision to sell their products online exclusively ruined the business
Fatal is a synonym for calamitous in disastrous topic. In some cases you can use "Fatal" instead an adjective "Calamitous", when it comes to topics like help, tragic, deadly, devastating. popular alternative
Nearby Words: calamity, calamitously
Fatal
Fatal adjective - Bringing about ruin or misfortune.
Usage example: I made the fatal mistake of sharing my secret with the office's biggest blabbermouth
Calamitous is a synonym for fatal in disastrous topic. You can use "Calamitous" instead an adjective "Fatal", if it concerns topics such as deadly, help, tragic, devastating. popular alternative
Mutual synonyms
Related pairs
Cite this Source
Fatal and Calamitous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/calamitous/fatal
Calamitous & Fatal. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/calamitous/fatal>.
Fatal or Calamitous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/calamitous/fatal.
Google Ngram Viewer shows how "calamitous" and "fatal" have occurred on timeline