botch

US /bɑːtʃ/
UK /bɑːtʃ/
1.

pasticcio

to spoil something by doing it badly:

:
We botched (up) our first attempt at wallpapering the bathroom.
1.

pasticcio

something that is spoiled by being done badly:

:
The company made a series of botches before it went bankrupt.