impairment
stultification
constipation
deadening
futility
waste of time
piffle
pound sand
putter around
botch
piss in the wind
plow the sands
mug's game
nonfunctionalization
fool's errand
piss up a rope
useless
nail Jell-O to a tree
vain
waltz
pointlessly
hamstring
putter about
push against an open door
uselessness
lackadaisically
stultify
neutralize
fanny about
futilely
boondoggle
dullification
piddle
get blood out of a stone
chorelike
Sisyphean labour
fizzle
vainness
carry coals to Newcastle
make bricks without straw
noise
bungle
bite on granite
uselessly
nonpermeabilization
timepass
inutility
run to waste
beat one's meat
futilitarian
useless as tits on a boar hog
frustrate
nonachievement
displacement activity
blivit
dead donkey
nonaccomplishment
foolishment
laxening
senselessly
étourderie
trash
folly
monkey humping a football
indulgence
spurn
unavailing
craziness
foolery
lunacy
tomfoolery
like painting the Forth Bridge
obsession
uneffective
unprofitably
masturbation
castrate
make unnecessary
save
nonefficiency
fruitless
unproductively
effectlessness
compulsion
timewasting
fruitlessly
wish one joy of it
inefficacy
monkeys humping a football
ineffectiveness
drive a coach and horses through
inefficient
run around like a chicken with its head cut off
lamely