This"tly (?), a.
1.
Overgrown with thistles; as, thistly ground.
2.
Fig.: Resembling a thistle or thistles; sharp; pricking.
In such a world, so thorny, and where none
Finds happiness unblighted, or, if found,
Without some thistly sorrow at its side.
Cowper.
© Webster 1913.