ETYMOLOGY
from Latin amicitia (friendship), (from amicus (friend)) + -al
EXAMPLE
“… What M. Ellis denyeth to be the question.
1. He saith it is not meant of the essential onenesse.
Answ. But this is meant, and is the foundation of the other.
2. It is not (saith he) meant of engagement to mutual care one of another.
Answ. Not amicitial or fraternal only, but authoritative, the greater part to regulate the lesse. …”
From: A Vindication of the Essence and Unity of the Church Catholike Visible, and the priority thereof in regard of particular churches in answer to the objections made against it
By Samuel Hudson, 1650
PRONUNCIATION
am-uh-SISH-uhl
Lexicophilia 