dead
idle
lean
marginal
unremunerative
abortive
barren
bootless
deleterious
detrimental
disadvantageous
disserviceable
fruitless
futile
gainless
harmful
ineffective
inefficient
injurious
losing
nonremunerative
otiose
pointless
prejudicial
profitless
purposeless
rewardless
sterile
unadvantageous
unavailing
unbeneficial
unfavorable
unfruitful
ungainful
unproductive
unrewarding
useless
worthless
frivolous
hazardous
ineffectual
irksome
laborious
superfluous
tedious
thankless
trivial
uninteresting
unnecessary
unsatisfactory
wasteful
profitable