Disastrous
Disastrous adjective - Bringing about ruin or misfortune.
Usage example: a split-second, disastrous decision that I would forever regret
Fatal is a synonym for disastrous in help topic. In some cases you can use "Fatal" instead an adjective "Disastrous", when it comes to topics like terrible, tragic, deadly, detrimental. popular alternative
Nearby Word: disaster
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
Disastrous is a synonym for fatal in deadly topic. You can use "Disastrous" instead an adjective "Fatal", if it concerns topics such as help, tragic, devastating. popular alternative
Mutual synonyms
Related pairs
Both words in one sentence
-
This led to a disastrous amount of friendly fire upon soldiers and particularly civilians, with the artillery being the biggest cause of (fatal) wounds and collateral damage during the rebellion.
-
One of the post-series TV specials was based on a disastrous backstory incident in which the Soul Hunters mistakenly assumed that a civilisation that was undergoing a Singularity was in the process of a fatal planetary catastrophe, and forcibly "harvested" them to their own systems.
Source: The Singularity - After the End: Several subtle details hint on the current idyllic state of the Earth being the result of the enormous effort to rebuild and revive the planet after the disastrous and almost fatal war or series of wars.
Source: Literature / Andromeda Nebula
Cite this Source
Fatal and Disastrous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/disastrous/fatal
Disastrous & Fatal. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/disastrous/fatal>.
Fatal or Disastrous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/disastrous/fatal.
Google Ngram Viewer shows how "disastrous" and "fatal" have occurred on timeline