Improper
Improper adjective - Not appropriate for a particular occasion or situation.
Nefarious and improper are semantically related. In some cases you can use "Nefarious" instead an adjective "Improper".
Nearby Word: improperly
Nefarious
Nefarious adjective - Not conforming to a high moral standard; morally unacceptable.
Usage example: the chaste heroines and nefarious villains of old-time melodramas
Mutual synonyms
Related pairs
- gross and improper
- gross and nefarious
- corrupt and improper
- corrupt and nefarious
- foul and improper
- foul and nefarious
- offensive and improper
- offensive and nefarious
- disreputable and improper
- disreputable and nefarious
- indecent and improper
- indecent and nefarious
- immoral and improper
- immoral and nefarious
Cite this Source
Nefarious and Improper. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/improper/nefarious
Improper & Nefarious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/improper/nefarious>.
Nefarious or Improper. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/improper/nefarious.
Google Ngram Viewer shows how "improper" and "nefarious" have occurred on timeline