ETYMOLOGY
from Latin exitiabilis (causing or bringing death or destruction, fatal, deadly),
from exitium (a going out, destruction) + -abilis (-able)
EXAMPLE
“… But this is very necessarye to be knowen, after what sorte he handled themperoure, when he toke thaigle by the throte? In the time of Iohan the .xii. and Otto the firste there was stablyshed a greuouse intollerable, hurtefull and exitiable othe to all thempire, to be sworne of all emperours in this maner. …”
From: The Beginning and Endynge of all Popery, or Popishe Lyngedome
By Walter Lynne, 1548
Lexicophilia 