17 entries under closely topic. ×

9
doggedly(adverb, thoroughly, firmly, strictly)
8
steadily(adverb, thoroughly, firmly, definitely)
7
diligently(adverb, thoroughly, seriously, vigorously)
7
unremittingly(adverb, thoroughly, seriously, vigorously)
4
assiduously(adverb, thoroughly, seriously, vigorously)
4
hard(adverb, thoroughly, actively, definitely)
4
industriously(adverb, thoroughly, seriously, vigorously)
4
intently(adverb, thoroughly, strictly, resolutely)
4
untiringly(adverb, thoroughly, firmly, meticulously)
3
earnestly(adverb, thoroughly, vigorously, actively)
2
intensively(adverb, thoroughly, meticulously, determinedly)
2
painstakingly(adverb, thoroughly, seriously, vigorously)
2
strenuously(adverb, thoroughly, seriously, vigorously)
1
exhaustively(adverb, thoroughly, meticulously, determinedly)
1
searchingly(adverb, thoroughly, meticulously, determinedly)
1
thoroughly(adverb, definitely, resolutely, determinedly)
1
with determination(expression, adverb, thoroughly, strictly)
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APASmart Define. (2015). persistently thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/persistently/thesaurus/synonyms
ChicagoSmart Define. 2015. "persistently thesaurus" https://smartdefine.org/persistently/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, persistently thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/persistently/thesaurus/synonyms>.
MLASmart Define. "persistently thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/persistently/thesaurus/synonyms>