botcher

/ˈbɑtʃər/
noun
  1. A person who does work carelessly or unskillfully, often making mistakes.
    • The plumber was a botcher who left the job worse than before.
    • The tailor was known as a botcher because he always ruined the fabric.
    • Don't hire that botcher to fix your car; he'll only cause more problems.
Antonyms
What does "botcher" mean? | whatsthatwordmean | whatsthatwordmean