bother
underdo
trifle
flea bite
carry coals to Newcastle
nonbeneficially
lift a finger
misendow
uneconomically
play with house money
unyieldly
fribble
nuisance
discommode
non-prerequisite
picayune
toy with
neglectable
slight
cut corners
get away with murder
drop in the bucket
unaccommodative
decapacitate
nonaccommodative
disaccommodate
unrepressive
bugger up
subefficacious
trouble
neglect
whistle in the wind
put out
disoblige
nonefficiency
nonrepressive
incommode
nonproductively
inconvenience
spurn
limp
like a hole in one's head
sparely
strikeout
make a federal case out of something
nit-noid
inconsequently
miss
unnegligent
unassisting