vastly

adverb

vast·​ly ˈvast-lē How to pronounce vastly (audio)
Synonyms of vastlynext
: to a very great or vast degree or extent : exceedingly
two people with vastly different tastes
a vastly more powerful bomb
But bluff and bravado … won against potential enemies who vastly outnumbered him.David Gilmour
It was the most eclectic—yet also vastly entertaining—evening of dance I have seen in a long time.Rita Felciano

Examples of vastly in a Sentence

the team has vastly improved in the course of the season vastly underestimated the cost of advertising the new product
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Scientists in China have proposed a new composite-material manufacturing method that could vastly improve the strength of structures used in spacecraft, aircraft, and drones. Chris Young, Interesting Engineering, 3 Apr. 2026 Andrew Higgins, an aerospace engineer at McGill University, worries that the LEGO-like way that SR-1 Freedom has been planned—with lots of parts from different, unrelated projects just waiting to be bolted together—vastly understates the challenge ahead. David W. Brown, Scientific American, 31 Mar. 2026 Fossil fuels are far more embedded in the global economy than CFCs ever were, and the requisite economic transformation is vastly larger. Big Think, 31 Mar. 2026 But the social psychologists who catapulted to prominence in the early two-thousands were less interested in the richer concept of eudaemonia and more interested in a thinner, hollower, and vastly more individualistic enterprise of happiness, of simply feeling good. Becca Rothfeld, New Yorker, 30 Mar. 2026 See All Example Sentences for vastly

Word History

First Known Use

1598, in the meaning defined above

Time Traveler
The first known use of vastly was in 1598

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Cite this Entry

“Vastly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vastly. Accessed 6 Apr. 2026.

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