Improper
Improper adjective - Not appropriate for a particular occasion or situation.
Undue is a synonym for improper in unlawful topic. In some cases you can use "Undue" instead an adjective "Improper", when it comes to topics like wrongful, unequal, not suitable.
Nearby Word: improperly
Undue
Undue adjective - Going beyond a normal or acceptable limit in degree or amount.
Usage example: try to avoid undue delay responding to e-mails
Improper is a synonym for undue in inappropriate topic. You can use "Improper" instead an adjective "Undue", if it concerns topics such as excessive, unlawful, wrongful, unequal.
Nearby Word: unduly
Mutual synonyms
Cite this Source
Undue and Improper. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/improper/undue
Improper & Undue. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/improper/undue>.
Undue or Improper. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/improper/undue.
Google Ngram Viewer shows how "improper" and "undue" have occurred on timeline