Portmanteau/portmanteau word

The word portmanteau dates from the 1500s derives from the French porter to carry and manteau meaning a mantle or cloak. Originally, a portmanteau was the servant who carried the mantle of his or her master or mistress. Later, it became a special folding case or valise for carrying clothes. Lewis Carroll (1832-1898) was the catalyst for the applying it to the context of words in Through the Looking Glass (1872) when he made up portmanteau words like slithy (lithe and slimy) and chortle (chuckle and snort). Modern examples of portmanteau words are brunch (breakfast and lunch) and humungous (huge and monstrous/tremendous).