- Definitions|2
- Thesaurus|630
- Abbreviations|0
201 entries under noun topic. ×
| utility(worth, practicality, usefulness, helpfulness) | |
| effectualness(performance, energy, skill, affect) | |
| proficiency(power, ability, skill, means) | |
| competency(performance, power, energy, ability) | |
| effectuality(effect, affect) | |
| practicality(worth, usefulness, helpfulness, serviceableness) | |
| qualification(force, power, strength, ability) | |
| sufficiency(efficiency, productiveness) | |
| vigor(force, drive, power, strength) | |
| activity(go, drive, power, strength) | |
| adequacy(performance, force, power, strength) | |
| cogency(power, strength, energy, influence) | |
| facility(power, ability, skill, means) | |
| faculty(performance, power, energy, ability) | |
| fitness(ability, skill, practicality, usefulness) | |
| talent(ability, skill, capacity, readiness) | |
| value(use, mass, success, worth) | |
| might(activity, go, force, drive) | |
| adeptness(skill, readiness, competence, effectiveness) | |
| adroitness(practicality, usefulness, helpfulness) |
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| APA | Smart Define. (2015). efficacy thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/efficacy/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "efficacy thesaurus" https://smartdefine.org/efficacy/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, efficacy thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/efficacy/thesaurus/synonyms>. |
| MLA | Smart Define. "efficacy thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/efficacy/thesaurus/synonyms> |