Noxious
Noxious adjective - Bad for the well-being of the body.
Treacherous and noxious are semantically related. In some cases you can use "Treacherous" instead an adjective "Noxious".
Nearby Words: noxiousness, noxiously
Treacherous
Treacherous adjective - Not true in one's allegiance to someone or something.
Noxious and treacherous are semantically related. Sometimes you can use "Noxious" instead an adjective "Treacherous".
Nearby Words: treachery, treacherously
Cite this Source
Treacherous and Noxious. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/noxious/treacherous
Noxious & Treacherous. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/noxious/treacherous>.
Treacherous or Noxious. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/noxious/treacherous.
Google Ngram Viewer shows how "noxious" and "treacherous" have occurred on timeline