Synonyms of vastly

vastly

adverb

ˈvast-lē 

1

as in extremely

to a great degree

the team has vastly improved in the course of the season

Synonyms & Similar Words

• extremely
• incredibly
• very
• highly
• terribly
• too
• greatly
• severely
• badly
• so
• far
• damned
• wildly
• damn
• really
• desperately
• heavily
• much
• seriously
• intensely
• immensely
• most
• that
• hugely
• especially
• super
• enormously
• jolly
• exceptionally
• awfully
• particularly
• fantastically
• full
• fiercely
• such
• absolutely
• exceedingly
• remarkably
• real
• mighty
• fabulously
• supremely
• utterly
• vitally
• frightfully
• totally
• awful
• specially
• significantly
• eminently
• uncommonly
• thoroughly
• way
• good and
• extra
• colossally
• completely
• mortally
• surpassingly
• positively
• deeply
• sorely
• deadly
• considerably
• mightily
• majorly
• wicked
• passing
• achingly
• sore
• entirely
• archly
• a lot
• monstrous
• radically
• wholly
• bone
• beastly
• rattling
• roaring
• noticeably
• cracking
• almighty
• profoundly
• ever
• substantially
• roaringly
• corking
• thumping
• whacking
• markedly
• dang
• filthy
• blisteringly
• spanking
• fully
• visibly
• obviously
• as all get-out
• notably
• extensively
• downright
• right
• unco
• stinking
• palpably
• purely
• appreciably
• flat-out
• astronomically
• altogether
• monumentally
• discernibly
• abundantly
• excessively
• amazingly
• plentifully
• obscenely
• astonishingly
• staggeringly
• plainly
• monstrously
• overmuch
• grandly

Antonyms & Near Antonyms

• somewhat
• slightly
• little
• nominally
• negligibly
• just
• marginally
• scarcely
• minimally
• hardly
• barely
• meagerly
• scantily

2

as in highly

to a large extent or degree

vastly underestimated the cost of advertising the new product

Synonyms & Similar Words

• highly
• greatly
• considerably
• much
• utterly
• significantly
• massively
• tremendously
• extensively
• enormously
• broadly
• largely
• hugely
• astronomically
• staggeringly
• monumentally
• noticeably
• monstrously
• sizably
• stupendously
• a lot
• colossally
• big-time
• appreciably
• no end
• by half
• abundantly
• amply
• plentifully
• copiously
• healthily

Antonyms & Near Antonyms

• slightly
• little
• nominally
• modestly
• negligibly
• minutely
• scarcely
• just
• microscopically
• hardly
• minimally
• barely
• imperceptibly
• fractionally
• insignificantly
• infinitesimally
• invisibly

Example Sentences

Recent Examples of vastly

If there is no certainty that commercial contracts or international trade agreements will be honored, this will also vastly diminish the potential of any economy. — David Baldacci, Vanity Fair, 3 Nov. 2026

Idaho has little in the way of independent polling — and candidates’ own polls showed vastly different outcomes. — Sarah Cutler, Idaho Statesman, 3 Nov. 2026

Both candidates have centered their campaigns on affordability, though each has introduced vastly different proposals to address rising costs for residents. — Richard Ramos, CBS News, 2 Nov. 2026

Disabled audiences, artists, and music professionals remain vastly understudied, particularly in the United States. — Maribeth Romslo, Rolling Stone, 1 Nov. 2026