SHAMEFUL

adj. disgraceful, dishonourable, base, low, mean, vile, degrading, indecent, inglorious, deplorable, discreditable, corrupt, disreputable, infamous, ignominious, humiliating, embarrassing, mortifying, humbling, chastening, discomfiting, shaming, blameworthy, scandalous, outrageous, unprincipled Quentin was known for his shameful behaviour both at school and in the army