4
sternly(adverb, seriously, vigorously, earnestly, actively)
3
deep
3
grievously
2
acutely(adverb, badly, severely, completely, poorly)
2
all joking aside(expression, idiom, adverb, seriously, vigorously)
2
bad
2
disadvantageously
2
grandly
2
majestically(keenly, eagerly, passionately)
2
nobly(keenly, eagerly, passionately)
2
passionately(adverb, down, severely, completely, seriously)
2
profoundly(adverb, severely, thoroughly, completely, intensely)
2
weightily
1
severe
1
actively(adverb, down, seriously, vigorously, earnestly)
1
affectingly(adverb, severely, thoroughly, completely, intensely)
1
alarmingly
1
anxious(adverb, earnestly, powerfully, hastily, keenly)
1
arduous
1
atrociously
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APASmart Define. (2015). gravely thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/gravely/thesaurus/synonyms
ChicagoSmart Define. 2015. "gravely thesaurus" https://smartdefine.org/gravely/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, gravely thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/gravely/thesaurus/synonyms>.
MLASmart Define. "gravely thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/gravely/thesaurus/synonyms>