hangdog (adj.)

• abashed
• abject
• ashamed
• beggarly
• blushing
• bootlicking
• chagrined
• chapfallen
• crestfallen
• cringing
• crushed
• embarrassed
• fawning
• flattering
• groveling
• humbled
• humiliated
• ingratiating
• mealymouthed
• mortified
• obsequious
• parasitic
• prostrate
• red-faced
• shamed
• shamefaced
• sycophantic
• timeserving
• toadyish