Synonyms

vastly

American

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

adverb

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

supervastly

adverb

Etymology

Origin of vastly

vast ( def. ) + -ly

Vocabulary lists containing vastly

Debbie Reynolds (1932-2016) Tribute List

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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.

Vastly experienced leg-break bowler Adil Rashid leads the spin attack, with all-rounders Liam Dawson, Will Jacks and Rehan Ahmed giving Brook a range of slow-bowling options.

From Barron's • Feb. 3, 2026

Vastly more than the old ticket price which, when adjusted for inflation, would cost £68.

From BBC • Sep. 22, 2024

Vastly different places, each of which boasts higher percentages of the local population living well into their 80s, 90s and beyond.

From Salon • Sep. 8, 2023

His Mad work was republished in countless books, many with self-deprecating titles like “Mad’s Vastly Overrated Al Jaffee.”

From New York Times • Apr. 10, 2023

Vastly far away I see the sun, black but shining, and slowly revolving around it there are spiders.

From "Grendel" by John Gardner

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023