50 entries under powerfully topic. ×

14
firmly(adverb, firm, fast, intensely, fiercely)
8
firm(adverb, hard, fast, severely, thoroughly)
6
fast(adjective, adverb, close, firm, intensely)
6
hard(adverb, firm, fast, severely, thoroughly)
6
solidly(adverb, hard, firm, fast, severely)
5
earnestly(adverb, fast, intensely, fiercely, violently)
4
strongly(adverb, fast, intensely, fiercely, violently)
2
seriously(adverb, fast, intensely, fiercely, violently)
2
tight(adverb, hard, firm, fast, severely)
1
actively(adverb, fast, intensely, fiercely, violently)
1
energetically(adverb, fast, intensely, fiercely, violently)
1
forcibly(adverb, fast, intensely, fiercely, violently)
1
intensely(adverb, fast, fiercely, violently)
1
keenly(adverb, fast, intensely, fiercely, violently)
1
relentlessly(adverb, fast, intensely, fiercely, violently)
1
spiritedly(adverb, fast, intensely, fiercely, violently)
1
tightly(adverb, hard, firm, fast, severely)
1
urgently(adverb, fast, intensely, fiercely, violently)
1
vigorously(adverb, fast, intensely, fiercely, violently)
0
angrily(adverb, fast, intensely, fiercely, violently)
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APASmart Define. (2015). steadfastly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/steadfastly/thesaurus/synonyms
ChicagoSmart Define. 2015. "steadfastly thesaurus" https://smartdefine.org/steadfastly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, steadfastly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/steadfastly/thesaurus/synonyms>.
MLASmart Define. "steadfastly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/steadfastly/thesaurus/synonyms>