sesquipedalian

noun

1. a very long word (a foot and a half long)

   Synonym:    sesquipedalia

adj

1. (of words) long and ponderous
   1. sesquipedalian technical terms

   Synonym:    polysyllabic

2. given to the overuse of long words
   1. sesquipedalian orators
   2. this sesquipedalian way of saying one has no money