nonefficacious
unefficacious
noneffective
inefficacious
undereffective
unfulfillable
uneffigiated
unsaturable
unpersuasible
nonirrevocable
unpracticable
unoptimizable
unaccommodable
nonoptimizable
nonexpendable
unexpendable
uncomplaisant
unsolidifiable
unexpeditious
unputrefiable
uncompensable
nonrestitutable
nonfulfilling
unrestitutable
unaffrontable
unaffable
improductively
uncheesable
nonproximate
unabatable
undersatisfied
nonapportionable
nonratable
unconsolable
unexpedited
nonpractical
nonconvenable
nonapposable
nonusable
unreplenishable
nonreplenishable
inapproachable
unusable
nonrationalizable
unrectifiable
nonrectifiable
nonutile
unerodable
nonerodable
unrationalizable
nonexcusable
nonaccommodative
unexpropriable
uningenious
unaccommodating
nonredeemable
undependable
uningenuous
undefinable
nonretraceable
unaccommodative
unratifiable
unsatisfiable
unresultful
nonfulfilled
open
nonefficient
unjusticiable
nonappreciable
unqualifiable
nonpersuasive
unconcretizable
unappropriable
unrelievable
noniterable
inappropriable
nonoptimized
unkeepable
unoptimized
unflatterable
inconstruable
unlicentious
unconstruable
nonassimilable
nonconstruable
unfortifiable
nonprovable
nonsurvivable
nonsmoothly
nonsuccessful
noncommensurable
unadmirable
ungradable
nonindictable
nonpurchasable
unostensible
unindictable
unbeneficent
unequable
unutilizable

English words for 'Not efficacious.'

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