Sinister
Sinister adjective - Being or showing a sign of evil or calamity to come.
Unconscientious and sinister are semantically related In some cases you can use "Unconscientious" instead an adjective "Sinister".
Unconscientious
Unconscientious adjective - Not conscientious;.
Sinister and unconscientious are semantically related in immoral topic. Sometimes you can use "Sinister" instead an adjective "Unconscientious".
Cite this Source
Unconscientious and Sinister. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/sinister/unconscientious
Sinister & Unconscientious. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/sinister/unconscientious>.
Unconscientious or Sinister. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/sinister/unconscientious.
Google Ngram Viewer shows how "sinister" and "unconscientious" have occurred on timeline