n. The practice of using long, sometimes obscure, words in speech or writing.
n. A very long word.
the GNU version of the Collaborative International Dictionary of English
n. Sesquipedality.
The Century Dictionary and Cyclopedia
n. The condition of being sesquipedalian; the practice of using, or fondness for using, long words; also, a long word, or a style abounding in long words.
Word Usage
"(I may be accused of sesquipedalianism though, hope so)"