He then gave an involuntary sigh, and followed her with a hang-dog look.
"To cut your throat, you hang-dog scoundrel," said Sampson, irately.
The way his eyes avoid yours, his shifty, hang-dog manner, reminds me of certain other gentlemen whom I have seen.
They helped to throw people off their guard, and to conceal his hang-dog look.
Nancy told Aldo about the viatique, and he said, with a hang-dog air, he would go and ask for it.
You may see this evidenced in their hang-dog faces as they "soldier" on their jobs.
He was not alone, and the instant I spied him with two hang-dog fellows, I knew he was—like the hen in the story—“laying for me!”
Silently, with a hang-dog air, he followed her up to her room.
His slow speech stung, but they both heard him out in hang-dog silence.
His distress was so real that it gave him a hang-dog appearance.
also hangdog, 1670s, "befitting a hang-dog," a despicable, degraded fellow, so called either from notion of being fit only to hang a dog (cf. cutthroat) or of being a low person (i.e. dog) fit only for hanging. As a noun from 1680s.