frustrate
barren
unavailing
unproductive
blank
sterile
bootless
unavailingness
good for nothing
ineffectible
kipple
useless as tits on a boar hog
vainness
trash
garbageness
inutility
piddling
dull
as much use as a chocolate fireguard
good-for-nothing
ineffectual
insensate
dowless
jabberwocky
nonfunctional
toshy
run to waste
uneffectual
not worth a whistle
fruitless
frou-frou
blivit
losel
floccinaucinihilipilificatious
impairment
nit-noid
stultification
deadening
tired
inalienably
constipation
twopenny
inutterable
deficiency
sweal
senselessly
unworth
effectlessness
noynoying
unnecessaries