18
harshly(adverb, severely)
17
severely(adverb, severely)
15
grimly(adverb, severely, seriously)
10
strictly(adverb, severely)
9
rigorously(adverb, severely)
8
roughly
7
austerely(adverb, severely, seriously, grimly)
7
gloomily
5
sharply(adverb, severely)
5
dourly(adverb, severely)
5
stringently(adverb, severely)
5
gravely(adverb, seriously, vigorously, earnestly, actively)
5
rigidly
4
blackly
4
firmly
4
acerbically(adverb, severely)
4
disconsolately
3
hardly
3
exactingly(adverb, severely)
3
curtly(adverb, severely)
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APASmart Define. (2015). sternly thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/sternly/thesaurus/synonyms
ChicagoSmart Define. 2015. "sternly thesaurus" https://smartdefine.org/sternly/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, sternly thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/sternly/thesaurus/synonyms>.
MLASmart Define. "sternly thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/sternly/thesaurus/synonyms>