20 entries under keen topic. ×

2
single-minded(adjective, enthusiastic, devoted, loyal)
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committed(adjective, enthusiastic, devoted, loyal)
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dedicated(enthusiastic, devoted)
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devoted(adjective, enthusiastic, loyal, hard-working)
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enthusiastic(adjective, devoted, loyal, hard-working)
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faithful(adjective, enthusiastic, devoted, loyal)
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given over to(expression, adjective, idiom, enthusiastic)
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hard-working(adjective, enthusiastic, devoted, loyal)
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loyal(adjective, enthusiastic, devoted, hard-working)
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old faithful(expression, adjective, enthusiastic, devoted)
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out-and-out(adjective, enthusiastic, devoted)
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purposeful(adjective, enthusiastic, devoted, loyal)
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stalwart(adjective, enthusiastic, devoted)
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staunch(adjective, enthusiastic, devoted)
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steadfast(adjective, enthusiastic, devoted)
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sworn(adjective, enthusiastic, devoted, loyal)
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true blue(expression, adjective, enthusiastic, devoted)
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true to the end(expression, adjective, idiom, enthusiastic)
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wholehearted(adjective, enthusiastic, devoted, loyal)
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zealous(adjective, enthusiastic, devoted, loyal)
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APASmart Define. (2015). single-hearted thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/single-hearted/thesaurus/synonyms
ChicagoSmart Define. 2015. "single-hearted thesaurus" https://smartdefine.org/single-hearted/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, single-hearted thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/single-hearted/thesaurus/synonyms>.
MLASmart Define. "single-hearted thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/single-hearted/thesaurus/synonyms>