Noxious and Nocuous

Noxious

Noxious adjective - Causing or capable of causing harm.
Usage example: noxious smog that for years has been encrusting the historic cathedral with soot

Nocuous is a synonym for noxious in miasmal topic. In some cases you can use "Nocuous" instead an adjective "Noxious". rare substitute

Nearby Words: noxiousness, noxiously

Nocuous

Nocuous adjective - Causing or capable of causing harm.
Usage example: hand washing is one of the easiest ways to help prevent the spread of nocuous germs

Noxious is a synonym for nocuous in dangerous topic. You can use "Noxious" instead an adjective "Nocuous".
Cite this Source
Nocuous and Noxious. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/noxious/nocuous
Noxious & Nocuous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/noxious/nocuous>.
Nocuous or Noxious. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/noxious/nocuous.
Google Ngram Viewer shows how "noxious" and "nocuous" have occurred on timeline