142 entries under active topic. ×

40
powerful(adjective, clear, strong, power, great)
30
efficacious(adjective, strong, power, moving, tough)
28
efficient(adjective, good, strong, power, tough)
25
operative(adjective, strong, power, valid)
24
potent(adjective, clear, strong, great, tough)
23
strong(adjective, clear, strong, power, tough)
23
forceful(adjective, clear, strong, power, tough)
23
influential(adjective, clear, strong, great, influence)
22
productive(adjective, power, tough, energetic, lively)
20
capable(adjective, power, tough, keen, smart)
19
compelling(adjective, clear, strong, great, energetic)
15
persuasive(adjective, clear, strong, great, tough)
14
competent(adjective, power, tough, keen, bright)
12
dynamic(adjective, strong, tough, energetic, violent)
12
energetic(adjective, strong, tough, violent, powerful)
12
forcible(adjective, clear, strong, tough, energetic)
11
able(adjective, power, tough, bright, energetic)
9
adequate(adjective, power, tough, energetic, powerful)
9
vigorous(adjective, strong, bright, energetic, violent)
8
operational(adjective, running, working, operative)
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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>