ETYMOLOGY
from turmoil + -ous
EXAMPLE
“…but trueth hys frende more then they bothe, euen so I thinke it no iniurye nor contumelye to Saynct Augustyne, yf the same were sayde of hym also geuynge hym otherwyse hys dewe commendacions, as he was surelye an excellent man, of dyuyne wytte, and knowledge, and so trauayled in settynge foorth Christes true Relygion in those turmoylous dayes, in perpetual combatte, agaynste learned heretykes and Prynces of the worlde, that he is worthelye called a Doctour and Pyller of Christes Churche…”
From: A Treatyse of the Newe India with other New Founde Landes and Islandes
By Sebastian Münster
Translated by Richard Eden, 1553
Lexicophilia 