62 entries under serious topic. ×

26
sincere(adjective, open, great, pleasant, keen)
21
earnest(adjective, strong, open, pleasant, keen)
15
genuine(adjective, open, warm, honest, total)
15
unfeigned(adjective, open, keen, warm, honest)
13
devout(adjective, open, keen, warm, honest)
13
honest(adjective, open, warm, physical, material)
12
emotional(adjective, strong, keen, warm, difficult)
12
true(adjective, open, warm, honest, total)
11
wholehearted(adjective, strong, open, pleasant, keen)
9
real(adjective, open, honest, total, physical)
7
dear(adjective, open, honest, true, straightforward)
6
bona fide(expression, adjective, open, warm, honest)
6
unaffected(adjective, open, honest, true, straightforward)
4
candid(adjective, open, honest, total, passionate)
4
frank(noun, adjective, open, honest, total)
4
impassioned(adjective, strong, keen, warm, difficult)
4
open(adjective, honest, true, straightforward, straight)
3
ecstatic(adjective, feeling, keen, warm, pain)
3
straightforward(adjective, open, honest, true, straight)
2
actual(adjective, honest, true, straightforward)
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APASmart Define. (2016). heartfelt thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/heartfelt/thesaurus/synonyms
ChicagoSmart Define. 2016. "heartfelt thesaurus" https://smartdefine.org/heartfelt/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, heartfelt thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/heartfelt/thesaurus/synonyms>.
MLASmart Define. "heartfelt thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/heartfelt/thesaurus/synonyms>