Sesquilpadillion Share definition Flag Sesquilpadillion is referred to someone who uses foot-long-words. My mom is such a Sesquilpadillion for using thoughs foot-long-words. Sesquilpadillion by ILOVEPATRICCARMAN. August 16, 2009 0 0 Get merch Get the Sesquilpadillion mug. Buy Now — $32.95 See more merch