4
determinedly(adverb, seriously, vigorously, actively, truly)
4
devotedly(adverb, kindly, faithfully, lovingly, caringly)
4
energetically(adverb, fast, seriously, intensely, fiercely)
4
honestly(adverb, truthfully)
4
resolutely(adverb, resolution, seriously, vigorously, quickly)
4
severely(adverb, fast, seriously, intensely, fiercely)
4
somberly(adverb, seriously)
4
spiritedly(adverb, fast, seriously, intensely, fiercely)
4
steadfastly(adverb, fast, intensely, fiercely, violently)
4
unremittingly(adverb, thoroughly, fully, completely, closely)
4
vigorously(adverb, fast, seriously, intensely, fiercely)
4
wholeheartedly(adverb, strongly, keenly, openly, energetically)
3
demurely(adverb, seriously)
3
hard(adjective, adverb, fast, very, fully)
3
sedately(adverb, seriously, vigorously, actively, truly)
3
animatedly(adverb, fast, seriously, intensely, fiercely)
3
candidly(adverb, keenly, eagerly, passionately, openly)
3
cordially(expression, adverb)
3
devoutly
3
earnest
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APASmart Define. (2016). earnestly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/earnestly/thesaurus/synonyms
ChicagoSmart Define. 2016. "earnestly thesaurus" https://smartdefine.org/earnestly/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, earnestly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/earnestly/thesaurus/synonyms>.
MLASmart Define. "earnestly thesaurus" 11 March 2016. Web. 24 September 2026. <https://smartdefine.org/earnestly/thesaurus/synonyms>