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Synonyms

vastly

American  
[vast-lee, vahst‐] / ˈvæst li, ˈvɑst‐ /

adverb

  1. to an extremely great extent or degree; hugely.

    We still have essentially the same brains as early humans, but most of us live in vastly different circumstances than they did.


Other Word Forms

Etymology

Origin of vastly

vast ( def. ) + -ly

Vocabulary lists containing vastly

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Many operators now avoid the passage and send ships instead around South Africa's Cape of Good Hope, vastly prolonging the journey between Asia and Europe and driving up fuel costs and emissions.

From Barron's Aug. 22, 2026

“The State AGs may call this a landmark case, but their limited claims are unsubstantiated and their financial demands are vastly disproportionate,” the company said in a statement on Thursday.

From Los Angeles Times Aug. 16, 2026

Mike Hawes, boss of the Society of Motor Manufacturers and Traders, the primary car industry lobby group, said the ZEV mandate was "conceived under vastly different conditions".

From BBC Aug. 14, 2026

Think of this as the “AI-optimist” scenario, in which AI vastly increases economic output while making tens of millions of workers redundant.

From The Wall Street Journal Aug. 13, 2026

He was too loyal to anything connected with himself—his roommate, his dormitory, his class, his school, outward in vastly expanded circles of loyalty until I couldn’t imagine who would be excluded.

From "A Separate Peace" by John Knowles

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