• IPA: /ˌsɛskwɪpɪˈdæləti/

sesquipedality

1. An instance or condition of being sesquipedalian.
   • 1759, [Laurence Sterne], chapter IX, in The Life and Opinions of Tristram Shandy, Gentleman, volume II, 2nd (1st London) edition, London: Printed for R[obert] and J[ames] Dodsley […], published 1760, OCLC 976409157 ↗, [https://books.google.com/books?id=n-QNAAAAQAAJ&pg=PA58–59 page 58–59]:

     Imagine to yourſelf a little, ſquat, uncourtly figure of a Doctor Slop, of about four feet and a half perpendicular height, with a breadth of back, and a ſeſquipedality of belly, which might have done honour to a ſerjeant in the horſe-guards.