outblunder
brick
oops
worsen
run into the ground
screw up
doit
confound
kick someone when they are down
dismalize
misalter
fumble
shit up
make a hash of
disimprove
eat shit
muddy
trash
slip up
blunder
suffer
pejorate
decline
bog
ruin
piss up
blow
beef
impair
rot in hell
cack up
drop a clanger
swamp
flaw
drop behind
fall
bottom fall out
require improvement
gooch
decay
make a pig's ear of
fall away
kick a dog when it's down
problematize
water down
tickle the dragon's tail
stave
mommick
compound
wreck
bollocks
hash
nause up
pansy
backfire
flub
wreck shop
ball up
go from bad to worse
bungle
bodge
botch up
fuck up
bobble
bollix
botch
mess up
poop on
rub salt in someone's wounds
fluff
bumble
queer up
bollix up
bollocks up
foul up
lose ground
louse up
misrectify