40 entries under thoroughly topic. ×

8
carefully(adverb, fully, completely, earnestly)
7
assiduously(adverb, fully, vigorously, closely)
7
diligently(adverb, seriously, vigorously, closely)
7
industriously(adverb, seriously, vigorously, closely)
5
laboriously(adverb, vigorously, earnestly, hastily)
4
exhaustively(adverb, absolutely, very, fully)
3
earnestly(adverb, fully, completely, hastily)
3
unremittingly(adverb, fully, vigorously, closely)
2
comprehensively(adverb, absolutely, fully, completely)
2
fully(adverb, absolutely, completely, entirely)
2
hard(adverb, very, fully, completely)
2
persistently(adverb, seriously, vigorously, closely)
2
strenuously(adverb, seriously, vigorously, closely)
2
unabridged(adverb, absolutely, fully, completely)
2
undividedly(adverb, absolutely, fully, completely)
2
vigilantly(adverb, vigorously, earnestly, hastily)
1
absolutely(adverb, fully, completely, quite)
1
altogether(adverb, absolutely, fully, completely)
1
closely(adverb, just, carefully, hardly)
1
competently(adverb, absolutely, fully, completely)
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APASmart Define. (2015). painstakingly thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/painstakingly/thesaurus/synonyms
ChicagoSmart Define. 2015. "painstakingly thesaurus" https://smartdefine.org/painstakingly/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, painstakingly thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/painstakingly/thesaurus/synonyms>.
MLASmart Define. "painstakingly thesaurus" 19 June 2015. Web. 25 September 2026. <https://smartdefine.org/painstakingly/thesaurus/synonyms>