butcher
butch-er
verb
To ruin or perform a task very badly, often through incompetence or clumsiness.
"He completely butchered the song during his performance."
noun
A person whose trade is slaughtering animals, dressing their carcasses, and selling meat.
"The local butcher prepared our Sunday roast."
Thesaurus
Synonyms: slaughterer, bungler, stumbler, sad sack, fumbler, bumbler, blunderer, fuckup, botcher, slaughter