327 entries under efficacy topic. ×

36
swingeing(adjective, feature, characteristic, power, strength)
25
hearty(adjective, person, body, power, sound)
14
masculine(noun, adjective, power, strength, intensity)
13
fresh(adjective, power, sound, strength, tough)
10
unmistakable(adjective, power, strength, plain, active)
8
affluent(noun, adjective, power, strength, active)
8
straight(adjective, power, strength, active, intensity)
7
low(adjective, power, strength, doing, active)
7
wet(verb, adjective, feature, strength, powerful)
6
back(verb, power, strength, doing, active)
6
full-blooded(adjective, power, strength, active, vigorous)
6
iron(adjective, hard, power, tough, firm)
6
main(noun, adjective, power, strength, active)
6
mordant(noun, adjective, power, strength, active)
6
robustious(adjective, force, power, strength, tough)
6
rude(adjective, force, power, strength, energy)
6
sheer(verb, feature, strength, doing, powerful)
6
strong-willed(adjective, power, strength, active)
6
total(verb, feature, power, great, strength)
5
affectionate(adjective, force, power, strength, energy)
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APASmart Define. (2016). strong thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/strong/thesaurus/synonyms
ChicagoSmart Define. 2016. "strong thesaurus" https://smartdefine.org/strong/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, strong thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/strong/thesaurus/synonyms>.
MLASmart Define. "strong thesaurus" 1 April 2016. Web. 24 September 2026. <https://smartdefine.org/strong/thesaurus/synonyms>