147 entries under adverb topic. ×

12
carefully(thoroughly, seriously, intensely, vigorously)
11
indefatigably(vigorously, earnestly, actively, hastily)
9
industriously(thoroughly, seriously, vigorously, closely)
8
assiduously(thoroughly, seriously, vigorously, closely)
7
strenuously(thoroughly, seriously, vigorously, closely)
7
sedulously
6
painstakingly(thoroughly, seriously, vigorously, closely)
6
persistently(thoroughly, seriously, vigorously, closely)
6
doggedly(thoroughly, closely, meticulously, resolutely)
6
laboriously(vigorously, earnestly, actively, hastily)
6
thoroughly(closely, carefully, meticulously, faithfully)
6
tirelessly(resolutely, tenaciously)
5
conscientiously(meticulously, fastidiously, vigilantly, industriously)
5
attentively(thoroughly, carefully, meticulously, faithfully)
5
devotedly(resolutely, tenaciously)
5
faithfully(thoroughly, carefully, meticulously, resolutely)
5
fervently(vigorously, earnestly, actively, hastily)
5
hard(thoroughly, closely, carefully, meticulously)
5
heedfully(thoroughly, carefully, meticulously, faithfully)
5
intently(thoroughly, closely, carefully, faithfully)
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APASmart Define. (2015). diligently thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/diligently/thesaurus/synonyms
ChicagoSmart Define. 2015. "diligently thesaurus" https://smartdefine.org/diligently/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, diligently thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/diligently/thesaurus/synonyms>.
MLASmart Define. "diligently thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/diligently/thesaurus/synonyms>