1
justly
1
keenly(adverb, fast, sprightly, severely, intensely)
1
laboriously(vigorously, earnestly, actively, hastily, carefully)
1
like a bulldog(expression, idiom)
1
like a leech(expression, idiom)
1
like all get out(expression, idiom, vigorously, earnestly, hastily)
1
like fury(expression, adverb, fast, intensely, fiercely)
1
like the devil(expression, idiom, vigorously, earnestly, hastily)
1
like the dickens(expression, idiom, vigorously, earnestly, hastily)
1
madly(adverb, fast, sprightly, intensely, fiercely)
1
manfully
1
manifestly
1
marry
1
materially
1
meanly(adverb, fast, sprightly, severely, intensely)
1
meditatively
1
mischievously
1
miserable
1
misery
1
monstrously
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APASmart Define. (2016). seriously thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/seriously/thesaurus/synonyms
ChicagoSmart Define. 2016. "seriously thesaurus" https://smartdefine.org/seriously/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, seriously thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/seriously/thesaurus/synonyms>.
MLASmart Define. "seriously thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/seriously/thesaurus/synonyms>