40 entries under manner topic. ×

5
fervently(adverb, sincere, politeness)
4
plainly(adverb, style, sincerity, artlessly)
4
dearly(adverb, style, sincerity)
4
truely(adverb, style, sincerity)
4
trustworthily(adverb, style, sincerity, truthfully)
4
whole-souledly(adverb, style, sincerity)
4
zestfully(adverb, style, pleasure, sincerity)
3
openly(adverb, style, sincerity, artlessly)
3
directly(adverb, style, sincerity, artlessly)
3
substantially(adverb, style, sincerity)
3
ethically(adverb, style, sincerity, truthfully)
3
in all honesty(expression, adverb, style, sincerity)
3
kindheartedly(adverb, style, sincerity, with enthusiasm)
3
kindly(adverb, style, feelings, emotion)
3
naively(adverb, sincere, politeness)
3
openheartedly(adverb, style, sincerity)
3
trustingly(adverb, style, sincerity, artlessly)
2
from the bottom of one's heart(expression, sincere, politeness)
2
without feigning(expression, sincere, politeness)
2
without pretence(expression, sincere, politeness)
<12>
10 years ago|11k views|share |citing 
APASmart Define. (2016). sincerely thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sincerely/thesaurus/synonyms
ChicagoSmart Define. 2016. "sincerely thesaurus" https://smartdefine.org/sincerely/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sincerely thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sincerely/thesaurus/synonyms>.
MLASmart Define. "sincerely thesaurus" 30 March 2016. Web. 25 September 2026. <https://smartdefine.org/sincerely/thesaurus/synonyms>