Adjective: hangdog 'hang,dóg
- Showing a sense of guilt
"the hangdog and shamefaced air of the retreating enemy";
- guilty, shamefaced, shamed
- Frightened into submission or compliance
"The hangdog expression on his face showed his guilt"
See also: afeard [archaic], afeared [archaic], afraid, ashamed, 'fraid [non-standard]
Encyclopedia: Hangdog