Bad
Bad adjective - Falling short of a standard.
Treacherous and bad are semantically related. In some cases you can use "Treacherous" instead an adjective "Bad".
Treacherous
Treacherous adjective - Not true in one's allegiance to someone or something.
Bad and treacherous are semantically related. Sometimes you can use "Bad" instead an adjective "Treacherous".
Nearby Words: treachery, treacherously
Both words in one sentence
-
Blackarachnia of Transformers: Beast Wars is a bad, bad girl, ready to dish out pain by the bucket at the drop of a hat, as well as a treacherous Femme Fatale when it suits her.
Source: Dark Action Girl -
Santana and Diaz are both treacherous and sadistic, so as a whole they're the "bad guy" group of the film.
Source: Film / Riddick - Heaven series, while "the biggest villain" is Hector the treacherous magi, each game has its own Big Bad.
Source: Big Bad / Video Games
Cite this Source
Treacherous and Bad. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/bad/treacherous
Bad & Treacherous. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/bad/treacherous>.
Treacherous or Bad. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/bad/treacherous.
Google Ngram Viewer shows how "bad" and "treacherous" have occurred on timeline