50 entries under fiercely topic. ×

13
energetically(adverb, fast, seriously, intensely)
12
vigorously(adverb, fast, seriously, intensely)
8
spiritedly(adverb, fast, seriously, intensely)
7
strongly(adverb, fast, sprightly, severely, seriously)
5
earnestly(adverb, fast, seriously, intensely)
5
powerfully(adverb, fast, sprightly, severely, intensely)
5
vivaciously(adverb, fast, sprightly, severely, seriously)
4
animatedly(adverb, fast, sprightly, seriously, intensely)
4
keenly(adverb, fast, sprightly, severely, seriously)
3
briskly(adverb, fast, sprightly, seriously, intensely)
3
forcibly(adverb, fast, sprightly, severely, seriously)
3
hard(adverb, fast, intensely, violently)
3
intensely(adverb, fast, sprightly, severely, seriously)
2
heavily(adverb, fast, sprightly, severely, seriously)
2
seriously(adverb, fast, sprightly, severely, intensely)
1
angrily(adverb, fast, sprightly, severely, seriously)
1
boisterously(adverb, fast, sprightly, severely, seriously)
1
brutally(adverb, fast, sprightly, severely, seriously)
1
cruelly(adverb, fast, sprightly, severely, seriously)
1
ferociously(adverb, fast, sprightly, severely, intensely)
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APASmart Define. (2015). actively thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/actively/thesaurus/synonyms
ChicagoSmart Define. 2015. "actively thesaurus" https://smartdefine.org/actively/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, actively thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/actively/thesaurus/synonyms>.
MLASmart Define. "actively thesaurus" 13 April 2015. Web. 24 September 2026. <https://smartdefine.org/actively/thesaurus/synonyms>