Sesquipedalian \ses-kwuh-puh-DAYL-yuhn\, adjective:
1. Given to or characterised by the use of long words.
2. Long and ponderous; having many syllables.
3. A long word
Plus he has a weakness for what we can mischievously call sesquipedalian excess: Look out for such terms as "epiphenomenal,""diegetic" and "proprioceptive." - Jabari Asim, "Reel Pioneer", Washington Post, November 19, 2000
Or perhaps:
Sonny Bill Williams, a surprisingly intelligent footballer and no stranger to words on the field, lapsed into a powerful sesquipedalian chant when asked about his sudden, desecrating departure from the great game of rugby league; "antidisestablismentarianism, antidisestablishmentarianism...he roared" Laurie Daley, Big Words On League, 2008
