hippopotomonstrosesquipedaliophobia Jump to navigation Jump to browse hippopotomonstrosesqui pp edaliophobia (popular misspelling, maybe on reason, to make the term even much longer) From hippopotomonstrosesquipedalian , an extension of sesquipedalian with advertisement hoc blending types of monstrum (“monster”) and hippopotamus (planned to exaggerate the span of the phrase itself and the concept