Ill
Ill adjective - Causing or capable of causing harm.
Usage example: one of the ill effects of winter weather is the rapid spread of germs as people spend more time together indoors
Ruinous and ill are semantically related. in harmful topic. In some cases you can use "Ruinous" instead an adjective "Ill", when it comes to topics like bad.
Nearby Word: illness
Mutual synonyms
Cite this Source
Ruinous and Ill. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/ill/ruinous
Ill & Ruinous. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/ill/ruinous>.
Ruinous or Ill. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/ill/ruinous.
Google Ngram Viewer shows how "ill" and "ruinous" have occurred on timeline