- Definitions|2
- Thesaurus|630
- Abbreviations|0
| aptness(practicality, usefulness, helpfulness) | |
| art(noun, power, ability, skill, means) | |
| artistry(practicality, usefulness, helpfulness) | |
| attainment(functioning, execution, implementation) | |
| authenticity(substance, realness) | |
| availableness | |
| avoirdupois(mass, heaviness, bulk) | |
| ballast(mass, heaviness, bulk) | |
| befitting | |
| beneficial | |
| benefit(practicality, usefulness, helpfulness) | |
| bent(noun, ability, capacity, competence, potential) | |
| bite(noun, power, strength, energy, vigor) | |
| bivalent | |
| brunt(noun, power, strength, energy, vigor) | |
| bulk(mass, heaviness) | |
| burden(mass, heaviness, bulk) | |
| burn(noun, vigor, liveliness, vitality, get-up-and-go) | |
| business | |
| candidness(substance, authenticity, realness) |
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| APA | Smart Define. (2015). efficacy thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/efficacy/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "efficacy thesaurus" https://smartdefine.org/efficacy/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, efficacy thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficacy/thesaurus/synonyms>. |
| MLA | Smart Define. "efficacy thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/efficacy/thesaurus/synonyms> |