butchered
adj.adj. badly damaged or ruined because of a lack of skill. You use this when someone does a job very poorly, like singing a song badly or making many mistakes in a speech.
adj. severely damaged, ruined, or executed with a gross lack of skill. Often used to describe the poor performance of a creative work or the mishandling of a task.
The singer completely butchered the national anthem.
The local theater group butchered the classic play by forgetting half their lines and using terrible accents.
While the original manuscript was a masterpiece of subtle prose, the translated version was so poorly edited that the author's intent felt completely butchered.
Typically used predicatively after linking verbs like 'feel' or 'look', or as a participial adjective before a noun.