1
exigently
1
fervently(adverb, seriously, vigorously, earnestly, actively)
1
flintily
1
for real(expression, adverb, seriously, vigorously, earnestly)
1
forbiddingly
1
fourthly
1
fundamentally(adverb, severely)
1
gruesomely
1
gruffly(adverb, severely)
1
grumpily
1
hard
1
hellish
1
icily(adverb, severely)
1
imperially(adverb, severely)
1
implacably
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
inclemently
1
inexorably
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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>