harmful
baleful
baneful
barren
bootless
choking
constrictive
contrary
corroding
corrosive
corrupting
corruptive
crosswise
damaging
deadly
deleterious
detrimental
disadvantageous
disserviceable
distressing
effete
empty
etiolated
fatuitous
fatuous
feckless
fruitless
futile
hindering
hindersome
hurtful
in the way
inadequate
inane
ineffective
ineffectual
inefficacious
inhibiting
inhibitive
injurious
inoperative
interrupting
interruptive
invalid
lethal
malefic
malevolent
malign
malignant
mischievous
counter-productive
curable
debilitate
dysfunctional
impolitic
impractical
inconclusive
pointless
prejudicial
recoverable
self-defeating
self-destructive
self-serving
stoopid
unacceptable
unfeasible
unproductive
unreliable
unsustainable
unwise
wasteful
worthwhile