sesquipedalism

From sesquipedal +‎ -ism.

sesquipedalism (uncountable)

1. (rare) Alternative form of sesquipedalianism.
   • 1901, George Jacob Holyoake, Public speaking and debate:

     all verbiage and sesquipedalism

• “sesquipedalism”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.