botcher

poropeukalo puhekieltä A person who mends things, especially such a cobbler or tailor.
1602, William Shakespeare, Twelfth Night:

Two faults, madonna, that drink and good counsel will amend: for give the dry fool drink, then is the fool not dry; bid the dishonest man mend himself: if he mend, he is no longer dishonest; if he cannot, let the botcher mend him.

Dilettanteism presupposes art as botchwork does handicraft; and the Dilettante holds the same relation to the artist that the botcher does to the craftsman.