65 entries under efficiency topic. ×

14
capability(noun, force, power, strength, energy)
11
effect(noun, force, power, strength, energy)
11
efficacy(noun, activity, performance, go, force)
10
force(noun, activity, go, style, drive)
10
power(noun, performance, go, force, style)
9
potency(noun, activity, performance, go, force)
8
strength(noun, activity, go, force, drive)
6
influence(noun, force, power, strength, energy)
6
punch(noun, go, force, end, style)
5
weight(noun, force, power, strength, influence)
5
validity(noun, force, end, drive, power)
4
capacity(noun, force, power, strength, ability)
4
clout(noun, force, drive, power, strength)
4
forcefulness(noun, activity, go, force, style)
4
performance(noun, energy, use, virtue, success)
4
usefulness(noun, order, end, benefit, reason)
3
ability(noun, style, power, strength, energy)
3
cogency(noun, end, drive, power, strength)
3
energy(noun, activity, performance, go, force)
3
pizzazz(noun, activity, go, style, drive)
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APASmart Define. (2016). effectiveness thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/effectiveness/thesaurus/synonyms
ChicagoSmart Define. 2016. "effectiveness thesaurus" https://smartdefine.org/effectiveness/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, effectiveness thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/effectiveness/thesaurus/synonyms>.
MLASmart Define. "effectiveness thesaurus" 25 February 2016. Web. 20 September 2026. <https://smartdefine.org/effectiveness/thesaurus/synonyms>