inefficacious

adjective
in·​ef·​fi·​ca·​cious | \ (ˌ)i-ˌne-fə-ˈkā-shəs How to pronounce inefficacious (audio) \

Definition of inefficacious

: lacking the power to produce a desired effect : ineffective

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Other Words from inefficacious

inefficaciously adverb
inefficaciousness noun

Examples of inefficacious in a Sentence

his efforts to restore the neglected houseplant back to health were belated and sadly inefficacious an inefficacious medication for a rare form of tuberculosis

First Known Use of inefficacious

1658, in the meaning defined above

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Time Traveler for inefficacious

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The first known use of inefficacious was in 1658

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Cite this Entry

“Inefficacious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/inefficacious. Accessed 29 May. 2020.

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