Sticky

Ordinarily, a word which means tacky, adhering--a word which conjures images of children with popsicle juice on their faces. However, when applied to the character in the Mysterious Benedict Society (George "Sticky" Washington), the word means "extremely intelligent" (i.e., facts stick to Sticky). Incidentally, Sticky's co-society members include Constance Contraire (the contrary one), Kate Wetherall (the cheery one), and Reynard Muldoon (the average one).