shameful

(used of conduct or character) deserving or bringing disgrace or shame

• “Man...has written one of his blackest records as a destroyer on the oceanic islands” Rachel Carson
• “an ignominious retreat”
• “inglorious defeat”
• “an opprobrious monument to human greed”
• “a shameful display of cowardice”

giving offense to moral sensibilities and injurious to reputation

• “scandalous behavior”
• “the wicked rascally shameful conduct of the bankrupt” Thackeray
• “the most shocking book of its time”