61 entries under seriously topic. ×

14
earnestly(adverb, vigorously, actively, powerfully)
14
grimly
14
solemnly(adverb, down, vigorously, earnestly)
13
severely(adverb, badly, completely, poorly)
13
soberly(adverb, down, vigorously, earnestly)
13
intensely(adverb, badly, severely, completely)
8
somberly(adverb, sadly, grimly, sternly)
8
thoughtfully(adverb, down, vigorously, earnestly)
7
demurely
7
sedately(adverb, down, vigorously, earnestly)
6
in earnest(expression, idiom, adverb, vigorously)
5
sadly(adverb, severely, thoroughly, completely)
4
sternly(adverb, vigorously, earnestly, actively)
2
all joking aside(expression, idiom, adverb, vigorously)
2
passionately(adverb, down, severely, completely)
1
actively(adverb, down, vigorously, earnestly)
1
cool it(expression, adverb, vigorously, earnestly)
1
cut the comedy(expression, idiom, adverb, vigorously)
1
determinedly(adverb, down, vigorously, earnestly)
1
down(adverb, vigorously, earnestly, actively)
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APASmart Define. (2015). gravely thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/gravely/thesaurus/synonyms
ChicagoSmart Define. 2015. "gravely thesaurus" https://smartdefine.org/gravely/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, gravely thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/gravely/thesaurus/synonyms>.
MLASmart Define. "gravely thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/gravely/thesaurus/synonyms>