157 entries under tough topic. ×

4
healthy(adjective, strong, sound, fit)
4
productive(adjective, power, direct, energetic)
4
staggering(control, strong, great, difficult)
4
stark(adjective, strong, hard, power, sound)
4
staunch(adjective, strong, sound, fit)
4
tenacious(adjective, strong, hard, power, sound)
4
useful(adjective, feature, strong, effective)
4
valuable(characteristic, control, strong, power, strength)
4
zealous(adjective, strong, intense, energetic)
3
brisk(adjective, strong, severe, energetic)
3
expert(adjective, good, great, keen)
3
exuberant(adjective, strong, energetic, lively)
3
heavy-duty(adjective, strong, sound, solid)
3
red-blooded(adjective, strong, energetic, lively)
3
redoubtable(adjective, power, difficult, vigorous)
3
rough(adjective, strong, great, severe)
3
shrewd(adjective, hard, power, strength)
3
snappy(adjective, strong, sharp, energetic)
3
spanking(adjective, strong, strength, energy)
3
steady(adjective, strong, sound, solid)
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APASmart Define. (2015). powerful thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/powerful/thesaurus/synonyms
ChicagoSmart Define. 2015. "powerful thesaurus" https://smartdefine.org/powerful/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, powerful thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/powerful/thesaurus/synonyms>.
MLASmart Define. "powerful thesaurus" 30 November 2015. Web. 28 September 2026. <https://smartdefine.org/powerful/thesaurus/synonyms>