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Definitions

zillion

[zil-yuhn] / ˈzɪl yən /

ADJECTIVE

countless

Synonyms

STRONGEST

endless myriad uncounted untold

WEAK

bags of gobs heap immeasurable incalculable infinite innumerous jillion legion limitless loads lots of many measureless mess mint mucho multitudinous numberless oodles passel of peck pile raft scads slew stack tidy sum umpteen uncountable wad whole slew

Antonyms

STRONGEST

few limited

WEAK

calculable countable counted measurable numbered numerable

ADJECTIVE

immeasurable

Synonyms

STRONGEST

boundless immense inexhaustible limitless unfathomable unlimited

STRONG

unmeasurable

WEAK

alive with bottomless countless crawling with endless extensive illimitable indefinite inestimable jillion large measureless no end of no end to umpteen unbounded uncountable unreckonable vast

Antonyms

STRONGEST

limited restricted

WEAK

bounded calculable finite measurable

ADJECTIVE

incalculable

Synonyms

STRONGEST

boundless enormous immense infinite unforeseen untold vast

WEAK

capricious chancy erratic fluctuant iffy incomputable inestimable innumerable jillion measureless no end of no end to numberless uncertain uncountable unfixed unpredictable unreckonable whimsical without number

Antonyms

STRONGEST

bounded limited little minute small tiny

WEAK

calculable countable measurable

ADJECTIVE

incomputable

Synonyms

WEAK

boundless capricious chancy countless enormous erratic fluctuant iffy immeasurable immense inestimable infinite innumerable jillion measureless no end of no end to numberless uncertain uncountable unfixed unforeseen unpredictable unreckonable untold vast whimsical without number

ADJECTIVE

measureless

Synonyms

WEAK

boundless capricious chancy countless enormous erratic fluctuant iffy immeasurable immense incomputable inestimable infinite innumerable jillion no end of no end to numberless uncertain uncountable unfixed unforeseen unpredictable unreckonable untold vast whimsical without number

ADJECTIVE

numberless

Synonyms

WEAK

countless endless heaps incalculable innumerable jillion many multitudinous myriad no end of no end to numerous umpteen uncountable uncounted unnumbered untold

Antonyms

WEAK

counted finite limited numbered

ADJECTIVE

numerous

Synonyms

STRONGEST

big diverse great large plentiful various

WEAK

copious infinite legion lousy with multifarious multitudinal multitudinous populous profuse rife scads several sundry thick umpteen voluminous

Antonyms

STRONGEST

little miniature similar small tiny uniform unimportant

WEAK

deficient few lacking

ADJECTIVE

umpteen

Synonyms

WEAK

considerable countless infinite innumerable lots of many millions numerous umteen

ADJECTIVE

uncountable

Synonyms

WEAK

boundless capricious chancy countless enormous erratic fluctuant iffy immeasurable immense incomputable inestimable infinite innumerable jillion measureless no end of no end to numberless uncertain unfixed unforeseen unpredictable unreckonable untold vast whimsical without number

NOUN

number

Synonyms

STRONGEST

amount collection company estimate lot many product quantity sum total volume

STRONG

abundance caboodle conglomeration crowd flock horde jillion multitude plenitude plenty slew throng totality whole

WEAK

manifoldness umpteen

Antonyms

STRONGEST

part

STRONG

lack

WEAK

letter one

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.

“I hadn’t seen it in a zillion years, and when I saw it, I understood it a little bit more. It made me feel tense, but I also thought, ‘Oh, interesting.’

From Los Angeles Times • Mar. 3, 2026

“So I don’t need to travel around with a zillion people.”

From The Wall Street Journal • Dec. 20, 2025

Fortunately, Salon's Culture team watched about 0.000001% of those zillion streamers and have helped sort the mid from the must-watch.

From Salon • Dec. 20, 2024

“Z” the zebra is still zooming through the wild, and a zillion zealous searches have returned zilch.

From Seattle Times • May 1, 2024

It was about a zillion degrees below zero.

From "The Watsons Go to Birmingham" by Christopher Paul Curtis

zillion

Example Sentences

Related Words