back to the drawing board
back to square one
in vain
successlessly
discomfited
thwarted
frustrated
defeated
foiled
disappointed
luckless
unsuccessfully
unsucceeding
attempted
unavailingly
postfailure
skip a beat
swing and a miss
unsuccessful
go wrong
nonresumption
fail
miscarry
like rats from a sinking ship
nonreturn
to no avail
misfire
nonconsequence
rechallenge
unsucceeded
beginningless
unsuccess
turkey
boomerang
nonconcluding
done for
essay
miss the mark
lapse
unlast
postflop
halt
nonsuccess
waver
go down the toilet
fall down
nonfailure
go out
nonembarkation
successlessness
blown
fat chance
unattainment
scrape
virtueless
revirginate
forlorn
unthrive
unflourishing
slim chance
dead in the water
presentient
fall flat on one's face
baffle
strike out looking
hiccup
solutionlessness
dead on the vine
unadvancement
vainly
unprogress
blow
manage
done
nonretrenchment
recessive
failed
unresumed
fight a losing battle
all is not lost
resile
let the grass grow under one's feet
bland
wither on the vine
downstat
failure
unrevivably
fall down on
nonsuccessful
insoluble