41 entries under tough topic. ×

15
useful(adjective, effective, beneficial, advantageous)
12
adequate(adjective, power, competent, capable)
11
productive(adjective, power, useful, effective)
10
competent(adjective, strong, power, bright)
9
active(adjective, prompt, quick, wise)
7
virtuous(adjective, good, innocent, effective)
5
decisive(adjective, important, powerful, effective)
5
proficient(adjective, keen, smart, intelligent)
4
handy(adjective, effective, adept, well-organized)
4
qualified(adjective, keen, smart, intelligent)
4
valuable(adjective, useful, effective, beneficial)
3
economic(adjective, effective, adept, well-organized)
3
equal to(verb, expression, phrasal verb, power)
2
accomplished(adjective, keen, smart, intelligent)
2
adept(adjective, bright, expert, competent)
2
profitable(useful, effective, beneficial, advantageous)
1
apt(adjective, bright, expert, competent)
1
conducive(useful, effective, beneficial, advantageous)
1
deft(keen, smart, bright, intelligent)
1
dynamic(strong, sharp, energetic, powerful)
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APASmart Define. (2015). effectual thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/effectual/thesaurus/synonyms
ChicagoSmart Define. 2015. "effectual thesaurus" https://smartdefine.org/effectual/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, effectual thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/effectual/thesaurus/synonyms>.
MLASmart Define. "effectual thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/effectual/thesaurus/synonyms>