de ri·gueur 
(də rē-gœr)
(də rē-gœr)adj.
Required by the current fashion or custom; socially obligatory.
[French : de, of + rigueur, rigor, strictness.]
- militant
- militantly
- militaria
- militarily
- militarism
- militarist
- militaristic
- militaristically
- militarization
- militarize
- military
- military attaché
- military-industrial complex
- military intelligence
- military law
- military police
- military science
- militate
- milites gloriosi
- militia
- militiaman
- milium
- milk
- milk adder
- milk-and-water