ETYMOLOGY
– from French lamentation or from Latin lāmentātiōnem,
from lāmentārī to lament
EXAMPLE
“…Truelie me thinketh that the soune of my lamentacious wepyng is right now flowe into youre presence…”
From: The Works of Geoffrey Chaucer;
Compared with the Former Editions, 1721
Usk’s Testament of Love
Lexicophilia 