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  1. Dictionary
    efficacious
    /ˌɛfɪˈkeɪʃəs/

    adjective

    • 1. (of something inanimate or abstract) successful in producing a desired or intended result; effective: formal "this treatment was efficacious in some cases"

    More definitions, origin and scrabble points

  2. Efficacious means having the power to produce a desired effect. Learn the synonyms, examples, word history, and usage of this adjective from Merriam-Webster dictionary.

  3. Efficacious means able to produce the intended result or working well under scientific testing conditions. Learn more about this formal adjective, its synonyms, and how to use it in sentences.

  4. Efficacious definition: capable of having the desired result or effect; effective as a means, measure, remedy, etc.. See examples of EFFICACIOUS used in a sentence.

  5. adjective. Something that is efficacious is effective. [formal] The nasal spray was new on the market and highly efficacious. Synonyms: effective, successful, efficient, powerful More Synonyms of efficacious. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers. Collins. English Quiz. Synonyms of. Language Lover's.

  6. Something that's efficacious is full of accomplishment. An efficacious medicine is one that cures you of the ailment you had. An efficacious recipe is one that comes out the way you intended it to taste. Remember that efficacious has two fs and two cs in it and you'll be efficacious in your spelling of the word.

  7. Efficacious means producing or capable of producing a desired effect. Find the origin, usage, and examples of this word, as well as related words and translations in different languages.

  8. Efficacious means producing the result that was wanted or intended. It is a formal adjective that can describe things, not people. Learn how to pronounce it, see pictures and example sentences, and find synonyms and related words.