110 entries under adverb topic. ×

10
persistently(vigorously, earnestly, hastily, carefully)
9
diligently(vigorously, earnestly, actively, hastily)
7
tirelessly(resolutely, tenaciously)
7
industriously(vigorously, earnestly, actively, hastily)
6
assiduously(vigorously, earnestly, actively, hastily)
5
doggedly(resolutely, tenaciously)
5
energetically(vigorously, earnestly, actively, hastily)
5
laboriously(vigorously, earnestly, actively, hastily)
5
sedulously
5
strenuously(vigorously, earnestly, actively, hastily)
5
unflaggingly
4
determinedly(resolutely, tenaciously)
4
faithfully(resolutely, tenaciously)
4
fervently(vigorously, earnestly, actively, hastily)
4
hard
4
resolutely(resolutely, tenaciously)
4
unremittingly(vigorously, earnestly, actively, hastily)
3
devotedly(resolutely, tenaciously)
3
heartily(resolutely, tenaciously)
3
indomitably(resolutely, tenaciously)
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APASmart Define. (2016). indefatigably thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/indefatigably/thesaurus/synonyms
ChicagoSmart Define. 2016. "indefatigably thesaurus" https://smartdefine.org/indefatigably/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, indefatigably thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/indefatigably/thesaurus/synonyms>.
MLASmart Define. "indefatigably thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/indefatigably/thesaurus/synonyms>