Ma'anar ƙamus na jimlar "de rigueur" ana buƙatar "da'a ko salon halin yanzu; wajibi ne na zamantakewa." Ana amfani da shi sau da yawa don bayyana wani abu da ake ganin yana da mahimmanci, wajibi, ko wajibi a cikin wani yanayi na musamman, musamman a cikin al'amuran salon salo, yarjejeniya, ko ƙa'idodin zamantakewa. Kalmar ta samo asali ne daga Faransanci kuma ana amfani da ita a cikin Ingilishi don kwatanta wani abu na al'ada, al'ada, ko kuma wanda ake tsammani a cikin wani yanayi.