1
legally valid(adjective, strong, power, valid, legal)
1
lucky(adjective, strong, happy, positive, beneficial)
1
magnetic
1
mobile(moving, active, effective, running, alive)
1
momentous
1
movable(moving, active, effective, running, alive)
1
moving(strong, important, powerful, active, effective)
1
omnipotent(power, energetic, vigorous, capable, chief)
1
operant
1
operating(moving, active, effective, running, alive)
1
organized(tough, energetic, effective, adept, effectual)
1
overruling(strong, energetic, vigorous, capable, effective)
1
paramount(strong, energetic, vigorous, capable, chief)
1
personable
1
positive(adjective, helpful, beneficial, favorable, optimistic)
1
potential(adjective, power)
1
preeminent(strong, energetic, vigorous, capable, effective)
1
prevailing(strong, energetic, vigorous, capable, chief)
1
profitable(strong, tough, energetic, useful, effective)
1
profound(sensible, wise, shrewd)
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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>