8 entries under vastly topic. ×

6
immensely(adverb, very, enormously, hugely)
5
hugely(adverb, very, enormously, infinitely)
5
tremendously(adverb, enormously, hugely, infinitely)
4
enormously(adverb, very, hugely, infinitely)
3
greatly(adverb, enormously, hugely, infinitely)
2
massively(adverb, very, enormously, hugely)
1
extremely(adverb, very, enormously, hugely)
0
very(adverb, enormously, hugely, immeasurably)
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APASmart Define. (2015). colossally thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/colossally/thesaurus/synonyms
ChicagoSmart Define. 2015. "colossally thesaurus" https://smartdefine.org/colossally/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, colossally thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/colossally/thesaurus/synonyms>.
MLASmart Define. "colossally thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/colossally/thesaurus/synonyms>