de rigueur
adjective/də rɪˈɡɜː(r)/
/də rɪˈɡɜːr/
[not before noun] (from French)- considered necessary if you wish to be accepted socially
- Evening dress is de rigueur at the casino.
Word Originmid 19th cent.: French, literally ‘in strictness’.Want to learn more?
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de rigueur