1
progressive(moving, active, effective, running, alive)
1
providential(adjective, happy, beneficial, fortunate, opportune)
1
qualified(tough, effective, adept, effectual, well-organized)
1
rational(sound, reasonable, sensible, wise, shrewd)
1
ready(tough, energetic, effective, adept, effectual)
1
real
1
reputable
1
restless(moving, active, effective, running, alive)
1
right(adjective, good, sound, reasonable, happy)
1
rolling(strong, active, effective, alive, favorable)
1
rough-and-ready
1
ruling(strong, energetic, effective, independent, prevailing)
1
running(moving, active, effective, alive, operating)
1
rushing(moving, active, effective, running, alive)
1
satisfactory(adjective, sound, happy, flawless, fortunate)
1
saving(tough, energetic, effective, adept, effectual)
1
seasonable(adjective, reasonable, happy, sensible, rational)
1
shrewd(tough, sensible, energetic, wise, effective)
1
skillful(tough, sensible, wise, shrewd, effective)
1
sturdy(strong, energetic, powerful, vigorous, capable)
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APASmart Define. (2015). efficacious thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/efficacious/thesaurus/synonyms
ChicagoSmart Define. 2015. "efficacious thesaurus" https://smartdefine.org/efficacious/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, efficacious thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficacious/thesaurus/synonyms>.
MLASmart Define. "efficacious thesaurus" 13 October 2015. Web. 22 September 2026. <https://smartdefine.org/efficacious/thesaurus/synonyms>