ETYMOLOGY
from Latin avītus of or pertaining to the avus (grandfather) + -ous
EXAMPLE
“…Being a leucothiop, he was not even a mediocrist, but a mere polypragmatical hafter or barrator. His inscience of avitous justicements, and of lexicology, his perissology and battology, imparted to his tractation of his cause, an imperspecuity which rendered it immomentous to the juratory audients…”
From: Letters to Squire Pedant in the East
Letter No. IX, 1843
By Lorenzo Altisonant (pseudonym Samuel Klinefelter Hoshour),
an Emigrant to the West, 1856
Lexicophilia 