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
Noxious is a synonym for fatal in poisonous topic. In some cases you can use "Noxious" instead an adjective "Fatal", when it comes to topics like pernicious, deadly.
Noxious
Noxious adjective - Bad for the well-being of the body.
Usage example: mixing bleach and ammonia can cause noxious fumes that can seriously harm you
Fatal is a synonym for noxious in poisonous topic. You can use "Fatal" instead an adjective "Noxious", if it concerns topics such as pernicious.
Nearby Words: noxiousness, noxiously
Mutual synonyms
Cite this Source
Noxious and Fatal. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fatal/noxious
Fatal & Noxious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fatal/noxious>.
Noxious or Fatal. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fatal/noxious.
Google Ngram Viewer shows how "fatal" and "noxious" have occurred on timeline