ETYMOLOGY
from Latin derogatorius derogatory + -ous
EXAMPLE
“…if the said archbishop intermeddled after the said provocation, his doings were derogatorious not only to the dignity of the patriarche but to the supremacy of the Pope and to the authority also of the general Counsell…”
From: A Treatise on The Pretended Divorce Between Henry VIII and Catharine of Aragon
By Nicholas Harpsfield, a1575
Modernized Text By Nicholas Pocock, 1878
Lexicophilia 