Harmful
Cite this Source
Unsound and Harmful. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/harmful/unsound
Harmful & Unsound. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/harmful/unsound>.
Unsound or Harmful. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/harmful/unsound.
Google Ngram Viewer shows how "harmful" and "unsound" have occurred on timeline