MethionylglutaminylarginyltyrosylglutamylserylleucylphenylLopadotemachoselachogaleokranioleipsanodrimhypotrimmatosilphioparaomelitokatakechymenokichlepikossyphophattoperisteralektryonoptekephalliokigklopeleiolagoiosiraiobaphetraganopterygon
This is a real word. It is Titin's Chemical name. Its the longest word ever made, and nobody ever uses it.
MethionylglutaminylarginyltyrosylglutamylserylleucylphenylLopadotemachoselachogaleokranioleipsanodrimhypotrimmatosilphioparaomelitokatakechymenokichlepikossyphophattoperisteralektryonoptekephalliokigklopeleiolagoiosiraiobaphetraganopterygon