Synonyms|428Antonyms|78|Broader|9Narrower|13Related|102
1
drive(noun, activity, go, power, strength)
1
effeciency
1
effectivity
1
efficacity
1
efficency
1
endurance(noun, activity, go, drive, power)
1
enterprise(noun, activity, go, drive, power)
1
exertion(noun, activity, go, drive, power)
1
experience(noun, ability, skill, competence)
1
expertise(noun, ability, skill, readiness, practicality)
1
expertness(noun, practicality, usefulness, helpfulness)
1
fire(noun, activity, go, drive, power)
1
flair
1
forcefulness(noun, activity, go, force, drive)
1
forcibleness(force, power, strength, ability, mass)
1
fortitude(noun, activity, go, drive, power)
1
function(noun, ability, service, capacity, practicality)
1
genius
1
get-up-and-go(noun, go, force, drive, power)
1
go(noun, activity, force, drive, power)
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APASmart Define. (2015). efficacy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/efficacy/thesaurus/synonyms
ChicagoSmart Define. 2015. "efficacy thesaurus" https://smartdefine.org/efficacy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, efficacy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/efficacy/thesaurus/synonyms>.
MLASmart Define. "efficacy thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/efficacy/thesaurus/synonyms>