the jug goes to the well until it breaks
fight a losing battle
self-defeating
fumblingness
lay eggs
flaw
go down in flames
go out
go down the toilet
another string to one's bow
backfire
fall down
weakest link
fall flat on one's face
die on the vine
premortem
bomb
blemish
beef
blow
faultable
fallible
thwart
fail
bulletproof
founder
crab
lay an egg
dead duck
halt
not win for losing
blow up in one's face
a bad penny always turns up
kamikaze
blow up
limitation
mis-
be riding for a fall
mutilate
goat rope
mismanageable
take a shit
drop the ball
scant
shit the bed
errant
strike out looking
slip up
worm in the apple
wrinkle
thumbscrew
break
mislaunch
duh factor
flawed
take on water
failingness
hit-or-miss
frosh
go wrong
require improvement
imperfect
technical difficulty
the wheels fell off
come a cropper
nonuse
plough
faultiness
repine
come a gutser
no-win
miss
feet of clay
error-prone
gotcha
weak
defectiveness
collapsible
flag
bollocks up
gronk
screw the pooch
failure to prepare is preparing to fail
fimble
call
fallibility
barf
attempted
omit
do-or-die
imperfectible
unreliability
futz
blunderous