3
kindly(adverb, style, feelings, emotion, manner)
3
naively(adverb, manner, sincere, politeness)
3
openheartedly(adverb, style, manner, sincerity)
3
regards(adverb, regard, ending, politeness)
3
righteously(adverb, really, seriously, truly, honestly)
3
sincerely yours(expression, regard, ending, politeness)
3
trustingly(adverb, style, manner, sincerity, artlessly)
2
yours faithfully(expression, idiom, respect, faith, sincerity)
2
yours respectfully(expression, idiom, respect, faith, sincerity)
2
from the bottom of one's heart(expression, manner, sincere, politeness)
2
genially(adverb, feelings, emotion, pleasantly, happily)
2
unreservedly(adverb, freely, willingly, gladly)
2
without feigning(expression, manner, sincere, politeness)
2
without pretence(expression, manner, sincere, politeness)
1
fairly(adverb, really, seriously, truly, honestly)
1
creditably(adverb, well, extremely, greatly, admirably)
1
faithfully yours(expression, idiom, respect, faith, sincerity)
1
in all seriousness(expression, idiom, adverb, seriously, vigorously)
0
all joking aside(expression, idiom, adverb, seriously, vigorously)
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APASmart Define. (2016). sincerely thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sincerely/thesaurus/synonyms
ChicagoSmart Define. 2016. "sincerely thesaurus" https://smartdefine.org/sincerely/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sincerely thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sincerely/thesaurus/synonyms>.
MLASmart Define. "sincerely thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/sincerely/thesaurus/synonyms>