- 1. a. Not efficacious; not having power to produce the effect desired; inadequate; incompetent; inefficient; impotent. Source: opted
- 2. adj. lacking the power to produce a desired effect Source: wordnet
- 3. 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. Source: webster
- 4. Not efficacious; not having power to produce the effectdesired; inadequate; incompetent; inefficient; impotent. Boyle.The authority of Parliament must become inefficacious . . . torestrain the growth of disorders. Burke. Source: adambom
- 5. a. lacking the power to produce a desired effect Source: ecdict
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inefficacious
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