6 entries under seriously topic. ×

7
diligently(adverb, thoroughly, vigorously, closely)
7
unremittingly(adverb, thoroughly, vigorously, closely)
4
assiduously(adverb, thoroughly, vigorously, closely)
4
industriously(adverb, thoroughly, vigorously, closely)
2
painstakingly(adverb, thoroughly, vigorously, closely)
2
strenuously(adverb, thoroughly, vigorously, closely)
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APASmart Define. (2015). persistently thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/persistently/thesaurus/synonyms
ChicagoSmart Define. 2015. "persistently thesaurus" https://smartdefine.org/persistently/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, persistently thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/persistently/thesaurus/synonyms>.
MLASmart Define. "persistently thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/persistently/thesaurus/synonyms>