45 entries under thoughtfully topic. ×

16
earnestly(adverb, fast, resolution, intensely, fiercely)
14
gravely(adverb, badly, severely, completely, poorly)
8
in all conscience(expression, idiom, adverb, greatness, really)
7
in earnest(expression, idiom, adverb, resolution, affirmation)
5
fervently(adverb, thoroughly, vigorously, earnestly, actively)
3
actively(adverb, fast, sprightly, severely, intensely)
3
passionately(adverb, severely, thoroughly, completely, extremely)
3
purposefully(adverb, thoroughly, vigorously, earnestly, actively)
3
vigorously(adverb, fast, intensely, fiercely, earnestly)
2
all joking aside(expression, idiom, adverb, actively, truly)
2
determinedly(adverb, earnestly, actively, truly)
2
down(adverb, earnestly, actively, truly)
2
for real(expression, adverb, earnestly, actively, truly)
2
in all seriousness(expression, idiom, adverb, actively, truly)
2
sternly(adverb, badly, severely, actively, truly)
1
cool it(expression, adverb, earnestly, actively, truly)
1
cut the comedy(expression, idiom, adverb, actively, truly)
1
simmer down(expression, adverb, earnestly, actively, truly)
1
straighten out(expression, adverb, earnestly, actively, truly)
1
with a straight face(expression, idiom, adverb, actively, truly)
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APASmart Define. (2016). seriously thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/seriously/thesaurus/synonyms
ChicagoSmart Define. 2016. "seriously thesaurus" https://smartdefine.org/seriously/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, seriously thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/seriously/thesaurus/synonyms>.
MLASmart Define. "seriously thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/seriously/thesaurus/synonyms>