Ah, what a word. I've been contemplating it a lot lately. Even the sound of it—when broken up into syllables, and given a bit of snake-tongue at the end ("ex"-"cesssssss")—I suddenly picture the image of a water glass being filled to the brim, and then spilling out and onto the countertops... and then pouring pouring pouring off onto the floor like a mini waterfall. Spills...of something off balance. Spills of too much.