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Inefficacious has 30 synonyms. The top synonyms for inefficacious are unauthoritative, unsuccessful, unfortunate, meaningless, lightweight, inoperative, inefficient, ineffectual and 22 more. Another word for inefficacious is unauthoritative. Browse the full list below.
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Frequently asked questions
What is a synonym for inefficacious?
A common synonym for inefficacious is unauthoritative. Other synonyms include unsuccessful, unfortunate, meaningless, lightweight.
How many synonyms does inefficacious have?
Inefficacious has 30 synonyms listed on Thesaurasize.
What does inefficacious mean?
(adj): incapable of having the intended consequence; not effective
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