Not only is portmanteau a fancy-pants name for a two-compartment suitcase, it is also describes blending two words into one. Two examples of legit portmanteaus are smog (smoke + fog) and brunch (breakfast + lunch). There are, however, beaucoup portmanteaus that are not recognized by Merriam-Webster: some descriptive and useful and others trite and annoying. While swapportunity, Brangelina, and Obamacare are like fingernails across the chalkboard, frappuccino, groupon, and banjitar are some kind of wonderful. In fact they are portmanderful. You can quote me on that.
“Curiouser and curiouser.” ~Lewis Carroll, Alice’s Adventures in Wonderland