His eyes lost their menacing cast (they were bottlegreen, and how could such clear and feckless eyes have seemed menacing, or even dark?).
King, Stephen
The Stand
Now look, this is our Caspar, feckless Caspar, returned from the Hague.
Gregory Maguire
Confessions of an Ugly Step Sister
Aeron Greyjoy had been the most amiable of his uncles, feckless and quick to laugh, fond of songs, ale, and women.
George R. R. Martin
A Clash of Kings
They were incorrigibly children of the idea, feckless and colour-blind, to whom body and spirit were forever and inevitably opposed.
T. E. Lawrence
Seven Pillars of Wisdom