Synonyms|412Antonyms|83|Broader|4Narrower|1Related|376

44 entries under useful topic. ×

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serendipitous(beneficial, advantageous)
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supportive(beneficial, advantageous)
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sympathetic(beneficial, advantageous)
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utilitarian(beneficial, advantageous)
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APASmart Define. (2015). efficacious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/efficacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "efficacious thesaurus" https://smartdefine.org/efficacious/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, efficacious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/efficacious/thesaurus/synonyms>.
MLASmart Define. "efficacious thesaurus" 13 October 2015. Web. 23 September 2026. <https://smartdefine.org/efficacious/thesaurus/synonyms>