132 entries under vigorous topic. ×

12
vehement(adjective, strong, keen, warm, intense)
11
intent(adjective, strong, severe, keen, warm)
11
spirited(adjective, strong, keen, warm, intense)
11
strong(adjective, intense, energetic, passionate, violent)
10
animated(adjective, person, strong, keen, warm)
10
avid(adjective, person, strong, kind, keen)
10
deep(adjective, person, set, strong, warm)
10
vigorous(adjective, keen, warm, intense, energetic)
10
wholehearted(adjective, strong, open, pleasant, keen)
9
burning(adjective, feeling, strong, keen, warm)
9
substantial(adjective, importance, big, heavy, enthusiastic)
8
frank(adjective, person, open, honest, total)
8
honest(adjective, set, open, severe, warm)
7
anxious(adjective, strong, kind, keen, friendly)
7
cordial(adjective, person, feeling, kind, pleasant)
7
emphatic(adjective, complete, warm, total, intense)
7
true(adjective, open, warm, honest, total)
6
fiery(adjective, feeling, keen, warm, intense)
6
hot(adjective, keen, warm, intense, energetic)
5
active(adjective, energetic, enthusiastic, lively)
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APASmart Define. (2016). earnest thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/earnest/thesaurus/synonyms
ChicagoSmart Define. 2016. "earnest thesaurus" https://smartdefine.org/earnest/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, earnest thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/earnest/thesaurus/synonyms>.
MLASmart Define. "earnest thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/earnest/thesaurus/synonyms>