Evil
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
Mutual synonyms
Both words in one sentence
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The former two played with evil and ended up with the same Superpowered Evil Side, while the latter used a dangerous forbidden deck that gave him a fatal heart condition.
Source: Anime / Yu-Gi-Oh! GX - A non-fatal version in Annals of The Black Company: The Lady chooses to give up her powers and live as a mortal rather than allow an even greater evil than herself to take over the world.
Source: Heroic Sacrifice / Literature - Some forms of evil weather, such as the ones found in Waterburned, are instantaneously fatal to dwarves.
Source: One Hit Kill / Video Games
Cite this Source
Fatal and Evil. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/evil/fatal
Evil & Fatal. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/evil/fatal>.
Fatal or Evil. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/evil/fatal.
Google Ngram Viewer shows how "evil" and "fatal" have occurred on timeline