0 (of an expression on a face) unhappy or ashamed, especially because of feeling guilty:
a hangdog look/expression
His affect is by turns boyish and hangdog.
He carried his head with a hangdog lurch--his heavy jaw was rough with stubble beard.
He was a loose-limbed, swarthy, slouching giant with a hangdog look.
One result of the successfully marketed lard packages was very plainly evident in the dissipated face and hangdog attitude of the marketer's son.
Here they saw many others of their own apparent ilk, dressed in rags, dirty, and carrying a certain hangdog and famished look.
He straightened, dropping the slightly disreputable, hangdog manner, then reached for his body shield controls.
All this would have formed an attractive whole, had it not been spoiled by a pronounced hangdog air.
Gone was the slouch, gone the bleariness of the eyes, gone the hangdog look.