IPA: /ˈbɒtʃə/
KK: /ˈbɑːtʃər/
A person who does work poorly or clumsily, often making mistakes or causing problems.
He is known as a botcher because he always messes up his projects.
Botcher originates from Middle English 'boccher' (meaning a butcher or one who cuts), which is derived from Old French 'bouchier' (meaning butcher). The term originally referred to someone who cuts or repairs, often in a clumsy or careless manner.
Think of a 'butcher' who 'cuts' things, and remember that a 'botcher' is someone who 'cuts' or 'repairs' things poorly.