2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Inefficacious \In*ef`fi*ca"cious\, a. [Pref. in- not +
efficacious: cf F. inefficace, L. inefficax.]
Not efficacious; not having power to produce the effect
desired; inadequate; incompetent; inefficient; impotent.
--Boyle.
The authority of Parliament must become inefficacious .
. . to restrain the growth of disorders. --Burke.
Note: Ineffectual, says Johnson, rather denotes an actual
failure, and inefficacious and habitual impotence to
any effect. But the distinction is not always observed,
nor can it be for we can not always know whether means
are inefficacious till experiment has proved them
ineffectual. Inefficacious is therefore sometimes
synonymous with ineffectual.
From WordNet r 1.6 [wn]:
inefficacious
adj : lacking the power to produce a desired effect; "laws that
are inefficacious in stopping crime" [ant: {efficacious}]
more about inefficacious
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