- Definitions|1
- Thesaurus|395
- Abbreviations|0
39 entries under efficacy topic. ×
| strength(noun, state, characteristic, control, force) | |
| ability(noun, characteristic, force, power, strength) | |
| puissance(noun, state, control, force, quality) | |
| effectualness(performance, energy, skill, readiness, competence) | |
| moxie(force, power, strength, ability, potency) | |
| productiveness(performance, energy, skill, readiness, competence) | |
| productivity(performance, energy, skill, readiness, competence) | |
| capacity(force, power, strength, ability, potency) | |
| competence(force, power, strength, ability, potency) | |
| get-up-and-go(control, force, power, strength, ability) | |
| peppiness(control, force, power, strength, ability) | |
| qualification(force, power, strength, ability, potency) | |
| qualifiedness(control, force, power, strength, ability) | |
| strenuousness(control, force, power, strength, ability) | |
| valor(control, force, power, strength, ability) | |
| vigorousness(control, force, power, strength, ability) | |
| abundance(performance, energy, skill, readiness, competence) | |
| adaptability(performance, energy, skill, readiness, competence) | |
| address(skill, readiness, competence, effectiveness) | |
| adeptness(skill, readiness, competence, effectiveness) |
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| APA | Smart Define. (2015). powerfulness thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/powerfulness/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "powerfulness thesaurus" https://smartdefine.org/powerfulness/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, powerfulness thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/powerfulness/thesaurus/synonyms>. |
| MLA | Smart Define. "powerfulness thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/powerfulness/thesaurus/synonyms> |