roi fainéant
noun
roi fai·né·ant
rə¦wäˌfā(ˌ)nāˈäⁿ,
¦rw-
plural rois fainéants
"
: a do-nothing king
especially : one who has delegated or lost his royal power while still reigning
Word History
Etymology
French, faineant king
First Known Use
1777, in the meaning defined above