ETYMOLOGY
from Latin inimīcitia unfriendliness, enmity + -ous
EXAMPLE
“..The first is the nocent, and inimicitious creatures, which are here enumerated to be seven; first the Wolfe, secondly the Leopard, thirdly the yong Lyon, fourthly the Beare, fiftly the Lyon, sixtly the Aspe, seventhly the Cockatrice …”
From: The True Euangelical Temper
By John Jackson, 1641
Lexicophilia 