nonexample
slim chance
whistle for
resultless
poorly
kiss of death
fat chance
deathblow
whack
never-would-be
hassle
give something up as a bad job
whistle in the wind
heffalump
primrose path
mug's game
licking
wutless
scrobbler
ticket to ride
break new ground
flop
defeat
Heath Robinson
unsucceeding
unchallengingly
throw enough mud at the wall, some of it will stick
unusable
long shot
earthly
person from Porlock
foiling
impracticality
lose
coaster
square peg in a round hole
smooth sailing
throw enough mud at the wall and some of it will stick
uneffective
bubble
nonessentiality
successlessness
inexpediently
bomb
handful
nonexperience
busted flush
Hail Mary
obstacle