5
steadfast(adjective, complete, warm, total, sensible)
5
surety(noun, care, agreement, contract, assurance)
5
tireless(adjective, resolute)
5
truthful(adjective, truthful)
5
unfeigned(adjective, open, keen, warm, honest)
4
afire(adjective, keen, passionate, enthusiastic, excited)
4
bond(noun, agreement, contract, assurance, undertaking)
4
busy(adjective, strong, enthusiastic, active, thoughtful)
4
concentrated(adjective, set, strong, intense, passionate)
4
desirous(adjective, keen, energetic, enthusiastic, excited)
4
dignified(adjective, calm, dull, quiet, cool)
4
dogged(adjective, energetic, active, serious, resolute)
4
earnestly(adverb, resolution)
4
enterprising(adjective, activity, energetic, enthusiastic, determined)
4
factual(adjective, true, real, truthful, indisputable)
4
finicky(adjective, thorough, meticulous, painstaking)
4
heedful(adjective, thorough, meticulous, painstaking)
4
hostage(noun, counter, warrant, captive, accreditation)
4
importunate(adjective, big, significant, substantial, valuable)
4
insistent(adjective, energetic, resolute, persistent, demanding)
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APASmart Define. (2016). earnest thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/earnest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earnest thesaurus" https://smartdefine.org/earnest/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, earnest thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/earnest/thesaurus/synonyms>.
MLASmart Define. "earnest thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/earnest/thesaurus/synonyms>