2
pluckily(adverb, resolutely, tenaciously)
2
precisely(adverb, fastidiously, vigilantly)
2
staunchly(adverb, resolutely, tenaciously)
2
steadfastly(adverb, tenaciously)
2
steadily(adverb, thoroughly, closely, meticulously, resolutely)
2
strictly(adverb, thoroughly, carefully, faithfully, determinedly)
2
stubbornly(adverb, resolutely, tenaciously)
2
toughly(adverb, resolutely, tenaciously)
2
truly(adverb, resolutely, tenaciously)
2
unfalteringly
2
vigorously(adverb, earnestly, actively, hastily, carefully)
1
accurately(adverb, fastidiously)
1
actively intently(expression, adverb, vigorously, earnestly, hastily)
1
agilely(adverb, vigorously, earnestly, actively, hastily)
1
animatedly(adverb, vigorously, earnestly, actively, hastily)
1
bravely(adverb, tenaciously)
1
briskly(adverb, vigorously, earnestly, actively, hastily)
1
circumspectly
1
closely(adverb, thoroughly, carefully, meticulously, faithfully)
1
concernedly(adverb, attentively)
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APASmart Define. (2015). diligently thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/diligently/thesaurus/synonyms
ChicagoSmart Define. 2015. "diligently thesaurus" https://smartdefine.org/diligently/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, diligently thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/diligently/thesaurus/synonyms>.
MLASmart Define. "diligently thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/diligently/thesaurus/synonyms>