ETYMOLOGY
from Latin pacificus (peace-making, peaceful) + -ous,
from pax, pacem (peace) + -ficus (-fic)
EXAMPLE
“…These, belike, were not acquainted with the Exploits of the Graecian Xenophon, the Roman Caesar, the English Sidney, Montjoy and Ra∣leigh, Gentlemen that were renowned both in Arms and Letters. Yet such as were transported with Warmth to be a sighting, prevail’d in Number, before the Pacificous…”
From: Scrinia Reserata A Memorial offer’d to the Great Deservings of John Williams
By John Hacket, 1693
Lexicophilia 