6
immensely(adverb, very, enormously, hugely, vastly)
5
hugely(adverb, very, enormously, vastly, infinitely)
5
tremendously(adverb, enormously, hugely, vastly, infinitely)
5
vastly(adverb, very, enormously, hugely, infinitely)
4
enormously(adverb, very, hugely, vastly, infinitely)
3
greatly(adverb, enormously, hugely, vastly, infinitely)
2
giantly
2
gigantically
2
massively(adverb, very, enormously, hugely, vastly)
2
mightily
2
monstrously
1
astronomically
1
extremely(adverb, very, enormously, hugely, vastly)
1
gargantuanly
1
giganticly
1
heavily
1
highly
1
largely
1
mammothly
1
monumentally
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APASmart Define. (2015). colossally thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/colossally/thesaurus/synonyms
ChicagoSmart Define. 2015. "colossally thesaurus" https://smartdefine.org/colossally/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, colossally thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/colossally/thesaurus/synonyms>.
MLASmart Define. "colossally thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/colossally/thesaurus/synonyms>