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1. Dictionary

   inefficacious

   /ˌɪnɛfɪˈkeɪʃəs/

   adjective

   • 1. not producing the desired effect: "social conventions honed over thousands of years were suddenly inefficacious"

   Derivatives

   • 1. inefficaciously adverb
   • 2. inefficaciousness noun

   Scrabble Points: 23

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2. www.merriam-webster.com › dictionary › inefficaciousInefficacious Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › inefficacious

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   Learn the meaning of inefficacious, a word that means lacking the power to produce a desired effect. See synonyms, examples, word history, and related entries from the Merriam-Webster dictionary.

3. www.dictionary.com › browse › inefficaciousINEFFICACIOUS Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › inefficacious

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   Inefficacious definition: not able to produce the desired effect; ineffective.. See examples of INEFFICACIOUS used in a sentence.

4. www.vocabulary.com › dictionary › inefficaciousInefficacious - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › inefficacious

   Definitions of. inefficacious. adjective. lacking the power to produce a desired effect. “laws that are inefficacious in stopping crime”. synonyms: ineffective, ineffectual, uneffective. not producing an intended effect. see more.

5. www.collinsdictionary.com › dictionary › englishINEFFICACIOUS definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Inefficacious means failing to produce the desired effect or not able to produce the desired effect. See synonyms, pronunciation, collocations, sentences and word origin of inefficacious.

6. www.thefreedictionary.com › inefficaciousInefficacious - definition of inefficacious by The Free...

   www.thefreedictionary.com › inefficacious

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   Inefficacious means not capable of producing a desired effect or result; ineffective. Find the pronunciation, translation, and thesaurus of this word on The Free Dictionary website.

7. www.merriam-webster.com › thesaurus › inefficaciousINEFFICACIOUS Synonyms: 72 Similar and Opposite Words -...

   www.merriam-webster.com › thesaurus › inefficacious

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   Inefficacious means not producing the desired result or producing no results. Find 72 synonyms and antonyms of inefficacious, such as unsuccessful, futile, useless, and effective.

8. www.oed.com › dictionary › inefficacious_adjinefficacious, adj. meanings, etymology and more | Oxford English...

   www.oed.com › dictionary › inefficacious_adj

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   Inefficacious means ineffective or incompetent. It is derived from the prefix in- and the adjective efficacious, which means effective or productive. See the etymology, pronunciation, frequency and examples of inefficacious in OED.