32 entries under right topic. ×

21
powerful(adjective, good, strong, power, sound)
16
efficient(adjective, good, power, sound)
8
valid(adjective, strong, power, genuine)
6
weighty(adjective, good, strong, sound)
4
authoritative(adjective, good, strong, sound)
4
substantial(adjective, good, strong, sound)
3
good(sound, reasonable, rational, genuine)
2
logical(good, sound, reasonable, rational)
1
just(adjective, good, sound, reasonable)
1
legal(good, sound, reasonable, rational)
1
trustworthy(good, sound, reasonable, rational)
0
attested(good, sound, reasonable, rational)
0
authentic(good, sound, reasonable, rational)
0
bona fide(expression, good, sound, reasonable)
0
confirmed(good, sound, reasonable, rational)
0
credible(good, sound, reasonable, rational)
0
genuine(good, sound, reasonable, rational)
0
kosher(good, sound, reasonable, rational)
0
lawful(good, sound, reasonable, rational)
0
legit(good, sound, reasonable, rational)
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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>