50 entries under fast topic. ×

10
intensely(adverb, sprightly, severely, seriously)
8
sharply(adverb, sprightly, severely, seriously)
7
briskly(adverb, severely, seriously, intensely)
3
actively(adverb, sprightly, severely, seriously)
3
severely(adverb, very, sprightly, severely)
3
energetically(adverb, sprightly, seriously, intensely)
3
animatedly(adverb, sprightly, seriously, intensely)
3
rigorously(adverb, sprightly, severely, seriously)
3
spiritedly(adverb, sprightly, seriously, intensely)
3
vigorously(adverb, seriously, intensely, fiercely)
2
fiercely(adverb, sprightly, severely, seriously)
2
forcibly(adverb, sprightly, severely, seriously)
2
strongly(adverb, sprightly, severely, seriously)
2
vivaciously(adverb, pleasure, sprightly, severely)
1
angrily(adverb, sprightly, severely, seriously)
1
boisterously(adverb, sprightly, severely, seriously)
1
brutally(adverb, sprightly, severely, seriously)
1
cruelly(adverb, sprightly, severely, seriously)
1
earnestly(adverb, seriously, intensely, fiercely)
1
ferociously(adverb, sprightly, severely, intensely)
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APASmart Define. (2015). keenly thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/keenly/thesaurus/synonyms
ChicagoSmart Define. 2015. "keenly thesaurus" https://smartdefine.org/keenly/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, keenly thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/keenly/thesaurus/synonyms>.
MLASmart Define. "keenly thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/keenly/thesaurus/synonyms>