shameful (adj.)
- aberrant
- abnormal
- abominable
- arrant
- ashamed
- atrocious
- awful
- bad
- base
- beastly
- black
- blamable
- blameworthy
- brutal
- cheap
- conscience-smitten
- contemptible
- corrupt
- criminal
- damnable
- dark
- debasing
- degrading
- delinquent
- demeaning
- deplorable
- despicable
- detestable
- deviant
- dire
- discreditable
- disgraceful
- disgusting
- dishonorable
- disreputable
- dreadful
- egregious
- embarrassing
- enormous
- evil
- execrable
- fetid
- filthy
- flagitious
- flagrant
- foul
- fulsome
- grievous
- gross
- hateful
- heinous
- horrible
- horrid
- humbling
- humiliating
- ignominious
- illegal
- improper
- inappropriate
- incorrect
- indecent
- indecorous
- infamous
- inglorious
- iniquitous
- knavish
- lamentable
- loathsome
- lousy
- low
- mean
- monstrous
- mortifying
- nasty
- naughty
- nefarious
- noisome
- notorious
- obnoxious
- odious
- off-base
- off-color
- offensive
- opprobrious
- outrageous
- peccant
- pitiable
- pitiful
- rank
- regretful
- regrettable
- remorseful
- reprehensible
- reprobate
- repulsive
- rotten
- rueful
- sacrilegious
- sad
- scandalous
- scurvy
- shabby
- shady
- shamefaced
- shameless
- shocking
- shoddy
- sinful
- sordid
- sorry
- squalid
- terrible
- unbecoming
- unclean
- undue
- unfit
- unfitting
- unforgivable
- unlawful
- unpardonable
- unprincipled
- unrespectable
- unrighteous
- unseemly
- unspeakable
- unsuitable
- unworthy
- vicious
- vile
- villainous
- wicked
- wistful
- woeful
- worst
- worthless
- wretched
- wrong
- wrongful
