0 (of an expression on a face) unhappy or ashamed, especially because of feeling guilty: --
a hangdog look/expression
He was one of those little insignificant hangdog things with vacant eyes.
Where was the timid eye, the "hangdog look," the shrinking manner, he so disliked in his son?
Like those they had seen in the canoes he had a hangdog, shiftless look, different from the bold warrior of the more northerly forests.
The hangdog one bowed lower and a smirk of partial confidence began to broaden his face.
Across the face of the hangdog one spread a pallor that was as the whiteness of death.
The poor colonel went out of the room with a hangdog look.
He straightened and a little of the hangdog servility dropped away.
Gone was the slouch, gone the bleariness of the eyes, gone the hangdog look.