A couple of weeks ago, an apparently totally made-up new word seemed to set the land-speed record for the jump from “early use” to “inclusion in a dictionary.” On May 12, the word malamanteau showed up in the Web comic xkcd, where it was defined as “a neologism for a portmanteau created by incorrectly combining a malapropism with a neologism.”
It’s not the clearest definition ever written, but the idea is that a malamanteau blends one or more not-quite-right words to create a completely new one. Examples include the classic misunderestimated, bewilderness (as in “lost in the bewilderness”), and insinuendos (innuendo + insinuation)
I think the author missed an opportunity by not asking the titular question.