De rigueur
De rigueur adjective - Following the established traditions of refined society and good taste.
Usage example: though he was wearing a dinner jacket and a black bow tie, his jeans and tennis shoes were hardly de rigueur
Decorous is a synonym for de rigueur in courtesy topic. In some cases you can use "Decorous" instead an adjective phrase "De rigueur", when it comes to topics like necessary.
Decorous
Decorous adjective - Following the established traditions of refined society and good taste.
Usage example: we were asked to be on our most decorous behavior at the formal event
De rigueur is a synonym for decorous in courtesy topic. You can use "De rigueur" instead an adjective "Decorous", if it concerns topics such as appropriate.
Mutual synonyms
Cite this Source
Decorous and De rigueur. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/de_rigueur/decorous
De rigueur & Decorous. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/de_rigueur/decorous>.
Decorous or De rigueur. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/de_rigueur/decorous.
Google Ngram Viewer shows how "de rigueur" and "decorous" have occurred on timeline