50 entries under efficacy topic. ×

6
cleverness(noun, understanding, strength, knowledge, ability)
5
address(noun, performance, turn, knowledge, taste)
5
cunning(noun, understanding, power, knowledge, ability)
5
finesse(noun, creativity, understanding, strength, knowledge)
5
ingenuity(noun, strength, knowledge, ability, experience)
5
skillfulness(noun, creativity, strength, knowledge, ability)
4
adequacy(noun, craft, power, ability, skill)
4
power(noun, understanding, ability, grasp, command)
3
handiness(noun, strength, knowledge, ability, skill)
3
suitableness(noun, skill, readiness, competence)
2
capableness(skill, readiness, competence, effectiveness)
2
resourcefulness(skill, readiness, competence, effectiveness)
2
tact(noun, turn, taste, ability, practice)
1
aptness(noun, knowledge, ability, line, skill)
1
effectiveness(noun, power, ability, skill, means)
1
performance(noun, practice, skill, system, method)
0
abundance(skill, readiness, competence, effectiveness)
0
adaptability(skill, readiness, competence, effectiveness)
0
completeness(skill, readiness, competence, effectiveness)
0
economy(skill, readiness, competence, effectiveness)
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APASmart Define. (2015). proficiency thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/proficiency/thesaurus/synonyms
ChicagoSmart Define. 2015. "proficiency thesaurus" https://smartdefine.org/proficiency/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, proficiency thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/proficiency/thesaurus/synonyms>.
MLASmart Define. "proficiency thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/proficiency/thesaurus/synonyms>