deficient
incapable
incompetent
insufficient
lacking
short-handed
short-staffed
undermanned
understaffed
unequal to
wanting
adulterated
arrested
asymmetric
barren
base
blemished
bootless
callow
counterproductive
damaged
defective
disappointing
disheartening
disparate
displeasing
disproportionate
dissatisfactory
effete
emasculate
embryonic
empty
erroneous
etiolated
failing
fallible
fatuitous
fatuous
faulty
feckless
forceless
found wanting
fruitless
futile
half-assed
hypoplastic
ill-matched
ill-qualified
ill-sorted
immature
impaired
imperfect
impotent
imprecise
impure
in arrear
in arrears
in default
in short supply
adequate
false
improper
inaccurate
inappropriate
inefficient
mislead
proper
scanty
uncertain
unsatisfactory
weak