90 entries under sincere topic. ×

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cheerful(adjective, deep, earnest, wholehearted)
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compassionate(adjective, deep, earnest, wholehearted)
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effusive(adjective, enthusiastic, lively, hot, deep)
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empathetic(adjective, deep, earnest, wholehearted)
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enthused(adjective, keen, intense, passionate, enthusiastic)
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friendly(adjective, deep, earnest, wholehearted)
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godly(adjective, passionate, ardent, spiritual)
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goody-goody(adjective, passionate, ardent, spiritual)
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goody two-shoes(expression, adjective, passionate, ardent)
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gotta have(expression, adjective, keen, intense, passionate)
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gracious(adjective, deep, earnest, wholehearted)
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heart-and-soul(adjective, passionate, ardent, spiritual)
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holy(adjective, passionate, ardent, spiritual)
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hospitable(adjective, deep, earnest, wholehearted)
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hot for(expression, adjective, keen, intense, passionate)
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kindhearted(adjective, deep, earnest, wholehearted)
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kindly(adjective, deep, earnest, wholehearted)
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orthodox(adjective, passionate, ardent, spiritual)
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perseverant(adjective, strong, passionate, ardent)
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pietistic(adjective, passionate, ardent, spiritual)
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APASmart Define. (2015). fervid thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fervid/thesaurus/synonyms
ChicagoSmart Define. 2015. "fervid thesaurus" https://smartdefine.org/fervid/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, fervid thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fervid/thesaurus/synonyms>.
MLASmart Define. "fervid thesaurus" 17 July 2015. Web. 29 September 2026. <https://smartdefine.org/fervid/thesaurus/synonyms>