Thesaurus
inefficacious
adjective
Synonyms and Antonyms of INEFFICACIOUS
1
not producing the desired result <his efforts to restore the neglected houseplant back to health were belated and sadly inefficacious>
Synonyms counterproductive, feckless, hamstrung, ineffectual, inefficacious, inefficient, inexpedient
Related Words abortive, bootless, fruitless, futile, nonproductive, pointless, profitless, unavailing, unproductive, unprofitable, unsuccessful, useless, worthless
2
producing no results <an inefficacious medication for a rare form of tuberculosis>
Synonyms abortive, barren, bootless, empty, fruitless, ineffective, ineffectual, inefficacious, otiose, profitless, unavailing, unproductive, unprofitable, unsuccessful, useless, vain
Related Words hollow, idle, meaningless, pointless, valueless, worthless; hopeless, impossible, lost, no-win, unattainable; inadequate, insufficient, lacking, wanting; counterproductive
Near Antonyms meaningful, worthwhile; adequate, sufficient; applicable, feasible, functional, practicable, practical, realizable, usable (also useable), workable
Antonyms deadly, effective, effectual, efficacious, efficient, fruitful, potent, productive, profitable, successful, virtuous
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