30 entries under sincerely topic. ×

7
resolutely(adverb, seriously, vigorously, quickly, earnestly)
4
determinedly(adverb, down, seriously, vigorously, earnestly)
4
earnestly(adverb, seriously, vigorously, quickly, actively)
4
intently(adverb, seriously, vigorously, earnestly, actively)
3
vigorously(adverb, thoroughly, seriously, earnestly, actively)
2
actively(adverb, seriously, vigorously, quickly, earnestly)
2
fervently(adverb, seriously, vigorously, earnestly, actively)
2
passionately(adverb, seriously, vigorously, quickly, earnestly)
2
zealously(adverb, seriously, vigorously, earnestly, actively)
1
all joking aside(expression, idiom, adverb, seriously, vigorously)
1
cool it(expression, adverb, seriously, vigorously, earnestly)
1
cut the comedy(expression, idiom, adverb, seriously, vigorously)
1
down(adverb, seriously, vigorously, earnestly, actively)
1
for real(expression, adverb, seriously, vigorously, earnestly)
1
gravely(adverb, down, seriously, vigorously, earnestly)
1
in all conscience(expression, idiom, adverb, seriously, vigorously)
1
in all seriousness(expression, idiom, adverb, seriously, vigorously)
1
in earnest(expression, adverb, seriously, vigorously, earnestly)
1
not humorously(expression, adverb, down, seriously, vigorously)
1
sedately(adverb, down, seriously, vigorously, earnestly)
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APASmart Define. (2015). purposefully thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/purposefully/thesaurus/synonyms
ChicagoSmart Define. 2015. "purposefully thesaurus" https://smartdefine.org/purposefully/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, purposefully thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/purposefully/thesaurus/synonyms>.
MLASmart Define. "purposefully thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/purposefully/thesaurus/synonyms>