Comment by Darkstack

The funniest thing is that Portmanteau is not a french word in the first place. it's a large travelling case wich open like a book (in old english).

Porte-Manteau used to be the guy carrying the coat of the King and is not a Portmanteau. We translate portmanteau as "Mot-Valise" in french which means "Case(as in luggage)-Word".