Synonyms|930Antonyms|179|Broader|3Narrower|8Related|568
2
ill
2
importantly
2
in all seriousness(expression, idiom, adverb, actively, truly)
2
in good earnest(expression, idiom, resolution)
2
joking apart(verb, expression, phrasal verb, resolution, affirmation)
2
joking aside(verb, expression, adverb, phrasal verb)
2
majorly
2
momentously
2
openly
2
painstakingly(vigorously, earnestly, actively, hastily, carefully)
2
perseveringly(vigorously, earnestly, actively, hastily, carefully)
2
persistently(vigorously, earnestly, actively, hastily, carefully)
2
positively
2
relentlessly(adverb, fast, sprightly, severely, intensely)
2
rigorously(adverb, fast, badly, sprightly, intensely)
2
spiritedly(adverb, fast, intensely, fiercely, vigorously)
2
steadfastly(adverb, fast, intensely, fiercely, violently)
2
sternly(adverb, badly, severely, actively, truly)
2
strongly(adverb, fast, sprightly, severely, intensely)
2
undeniably
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APASmart Define. (2016). seriously thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/seriously/thesaurus/synonyms
ChicagoSmart Define. 2016. "seriously thesaurus" https://smartdefine.org/seriously/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, seriously thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/seriously/thesaurus/synonyms>.
MLASmart Define. "seriously thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/seriously/thesaurus/synonyms>