96 entries under sincere topic. ×

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perseverant(adjective, strong, passionate, ardent)
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pietistic(adjective, passionate, ardent, spiritual)
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pleasant(adjective, kind, tender, sympathetic, deep)
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prayerful(adjective, passionate, ardent, spiritual)
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purposeful(adjective, strong, passionate, ardent)
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revering(adjective, passionate, ardent, spiritual)
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softhearted(adjective, deep, emotional, earnest)
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steady(adjective, complete, warm, total, passionate)
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sure(adjective, complete, warm, total, passionate)
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sympathetic(adjective, kind, tender, deep, caring)
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unfaltering(adjective, complete, warm, total, passionate)
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unquestioning(adjective, complete, warm, total, passionate)
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unwavering(adjective, complete, warm, total, passionate)
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venerating(adjective, passionate, ardent, spiritual)
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whole-hearted(adjective, complete, warm, total, passionate)
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worshiping(adjective, passionate, ardent, spiritual)
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APASmart Define. (2015). fervent thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/fervent/thesaurus/synonyms
ChicagoSmart Define. 2015. "fervent thesaurus" https://smartdefine.org/fervent/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, fervent thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/fervent/thesaurus/synonyms>.
MLASmart Define. "fervent thesaurus" 3 August 2015. Web. 29 September 2026. <https://smartdefine.org/fervent/thesaurus/synonyms>