give something up as a bad job
like painting the Forth Bridge
error
lose one's way
throw up one's hands
emptyhandedness
fatal
preemption
law of diminishing returns
crap out
mislaunch
abort
asleep at the switch
nonperformance
do-or-die
nonfailure
fall at the last hurdle
die on the vine
prat about
fight a losing battle
miss the boat
pound sand
in vain
opportunism
uneffective
disconsider
bang one's head against a brick wall
nonsuccess
futility
go back on
draw a blank
procrastination is the thief of time
timeout
fail
wither on the vine
fool's errand
piffle
no-win
fall down on
get over oneself
stop short
polish a turd
miscarry
go belly-up
premortem
unfulfillment
ruin
miss the mark
piss in the wind
nonfulfilment
flop
lay an egg
attempted
clap out
blow
come to nought
grind to a halt
rearrange the deck chairs on the Titanic
vitiate
lick and a promise
time out
unproof
fanny about
dead duck
miss
shit the bed
deadening
nonfinishing
impairment
to no avail
stultification
constipation
not win for losing
stopping
washed up
no-win situation
abortion
cease and desist
nonuse
no use
wish one joy of it
nonfulfillment
pick up on
seize up
breakdown
one strike and you're out
postfailure
dump job
bomb
break down
bomb out
lay eggs
nugatory
useless
crush
that and a nickel will buy you a cup of coffee