kriegführend jugend keeps asking himself: what two words portmanteau comes from?


From the AHD:

French portemanteau, porte- from porter, to carry, from Old French, + manteau, cloak, from Old French mantel, from Latin mantellum.

So we see that portmanteau is, itself, not quite a portmanteau word. Perhaps our senior Pooh-Bah, tsuwm, can tell us if there is a word to describe a word that does not quite describe itself.