4
totally(adverb, completely)
4
wholly(adverb, completely)
3
congenially(adverb, sociably)
3
determinedly(adverb, resolutely, tenaciously)
3
diligently(adverb, resolutely, tenaciously)
3
doggedly(adverb, resolutely, tenaciously)
3
eagerly(adverb, freely, strongly, willingly, gladly)
3
exuberantly(adverb, happily, vigorously, strongly, gladly)
3
favorably(adverb, manner, genially)
3
fervent(adjective, enthusiastic)
3
hard
3
indefatigably(adverb, resolutely, tenaciously)
3
jovially(adverb, pleasure, pleasantly, happily, positively)
3
keenly(adverb, pleasure, enthusiastically, energetically, aggressively)
3
merrily(pleasure, pleasantly, happily, positively, freely)
3
passionately(pleasantly, happily, freely, cheerfully, readily)
3
persistently(adverb, resolutely, tenaciously)
3
soundly
3
stoutly
3
sturdily
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APASmart Define. (2016). heartily thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/heartily/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartily thesaurus" https://smartdefine.org/heartily/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, heartily thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/heartily/thesaurus/synonyms>.
MLASmart Define. "heartily thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/heartily/thesaurus/synonyms>