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
Ruinous is a synonym for fatal in disastrous topic. In some cases you can use "Ruinous" instead an adjective "Fatal", when it comes to topics like help, deadly, devastating. popular alternative
Ruinous
Ruinous adjective - Bringing about ruin or misfortune.
Usage example: a ruinous miscalculation of the financial markets left them bankrupt
Fatal is a synonym for ruinous in disastrous topic. You can use "Fatal" instead an adjective "Ruinous", if it concerns topics such as help, destructive, devastating. popular alternative
Mutual synonyms
Cite this Source
Ruinous and Fatal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fatal/ruinous
Fatal & Ruinous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fatal/ruinous>.
Ruinous or Fatal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fatal/ruinous.
Google Ngram Viewer shows how "fatal" and "ruinous" have occurred on timeline