140 entries under sincere topic. ×

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heated(adjective, keen, passionate, deep, eager)
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industrious(adjective, strong, passionate, ardent)
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irascible(adjective, deep, earnest, heartfelt)
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kindhearted(adjective, deep, earnest, heartfelt)
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kindly(adjective, deep, earnest, heartfelt)
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loving(adjective, deep, earnest, heartfelt)
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nourishing(adjective, enthusiastic, vigorous, emphatic)
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perseverant(adjective, strong, passionate, ardent)
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pleasant(adjective, friendly, deep, genial)
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robust(adjective, enthusiastic, vigorous, emphatic)
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sedulous(adjective, strong, passionate, ardent)
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sizable(adjective, enthusiastic, vigorous, emphatic)
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softhearted(adjective, deep, earnest, heartfelt)
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sound(adjective, firm, solid, enthusiastic, vigorous)
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stormy(adjective, deep, earnest, heartfelt)
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strong(adjective, enthusiastic, vigorous, ardent)
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substantial(adjective, firm, solid, enthusiastic, vigorous)
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urgent(adjective, strong, passionate, ardent)
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very enthusiastic(expression, adjective, strong, passionate, ardent)
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well(adjective, enthusiastic, vigorous, emphatic)
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APASmart Define. (2016). wholehearted thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/wholehearted/thesaurus/synonyms
ChicagoSmart Define. 2016. "wholehearted thesaurus" https://smartdefine.org/wholehearted/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, wholehearted thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/wholehearted/thesaurus/synonyms>.
MLASmart Define. "wholehearted thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/wholehearted/thesaurus/synonyms>