ETYMOLOGY
from trouble (n.) + -y or -ly
EXAMPLE (for adj. 1.)
“…Mvsyng vpon the restles bisynesse
Which that this troubly world hath ay on honde,
That othir thyng than fruyt of byttirnesse
Ne yeldeth nought, as I can vndirstonde,
At Chestre ynnë, right fast be the stronde,
As I lay in my bed vp-on a nyght,
Thought me bereft of sleep with force and myght…”
From: De Regimine Principum (The Governance of Kings and Princes)
By Thomas Hoccleve. c1412
Lexicophilia 