10
weighty(adjective, clear, strong, great, influence)
9
adequate(adjective, power, tough, energetic, powerful)
9
available(adjective, strong, power, valid, legal)
9
estimable(adjective, feature, characteristic, honor, detail)
9
prevailing(strong, influence, energetic, chief, principal)
9
smart(adjective, keen, sharp, bright, intelligent)
9
successful(adjective, good, happy, useful, valuable)
9
upright(adjective, feature, characteristic, good, honor)
9
vigorous(adjective, strong, bright, energetic, violent)
8
actual
8
advantageous(adjective, good, happy, energetic, proper)
8
helpful(adjective, good, useful, valuable, practical)
8
honest(adjective, feature, characteristic, good, honor)
8
just(adjective, feature, characteristic, honor, happy)
8
noble(adjective, feature, characteristic, good, honor)
8
operational(adjective, active, running, working, operative)
8
real
8
reliable(adjective, feature, characteristic, honor, detail)
8
right(adjective, feature, characteristic, honor, happy)
8
sound(noun, adjective, clear, strong, tough)
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APASmart Define. (2015). effective thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/effective/thesaurus/synonyms
ChicagoSmart Define. 2015. "effective thesaurus" https://smartdefine.org/effective/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, effective thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/effective/thesaurus/synonyms>.
MLASmart Define. "effective thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/effective/thesaurus/synonyms>