inadequate
adjective
[ ɪnˈadɪkwət ]
• lacking the quality or quantity required; insufficient for a purpose.
• "these labels prove to be wholly inadequate"
Similar:
insufficient,
not enough,
deficient,
poor,
scant,
scanty,
scarce,
sparse,
too little,
too few,
short,
in short supply,
paltry,
meagre,
skimpy,
sketchy,
incomplete,
restricted,
limited,
measly,
pathetic,
piddling,
exiguous,
incompetent,
incapable,
unsatisfactory,
not good enough,
no good,
found wanting,
not up to scratch,
lacking,
leaving much to be desired,
unfit,
ineffective,
ineffectual,
inefficient,
unskilful,
inexpert,
inept,
unproficient,
amateurish,
substandard,
bad,
hopeless,
useless,
inferior,
impotent,
powerless,
not up to snuff,
lousy,
duff,
not much cop,
no great shakes,
half-arsed,
half-assed,