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Synonyms

innumerable

American  
[ih-noo-mer-uh-buhl, ih-nyoo-] / ɪˈnu mər ə bəl, ɪˈnyu- /
Also innumerous

adjective

  1. very numerous.

  2. incapable of being counted; countless.

    Synonyms:
    numberless

innumerable British  
/ ɪˈnjuːmrəbəl, ɪˈnjuːmərəbəl /

adjective

  1. so many as to be uncountable; extremely numerous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See many.

Other Word Forms

  • innumerability noun
  • innumerabilness noun
  • innumerably adverb
  • quasi-innumerable adjective
  • quasi-innumerably adverb

Etymology

Origin of innumerable

1300–50; Middle English, from Latin innumerābilis “countless, innumerable,” equivalent to in- in- 3 + numerābilis “that can be counted or numbered” ( numerā(re) “to count” + -bilis -ble )

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.

There are innumerable challenges with human space travel, but one huge one that we have no good solutions for is that space is really, really bad for your health.

From Slate • Mar. 1, 2026

The author seems to trust that a coherent narrative will emerge, without the help of analytical threads, from a jumble of facts, tableaux, faces and innumerable quotes.

From The Wall Street Journal • Dec. 16, 2025

But then there were the innumerable brand tie-ins, promotional stops, products and advertisements, intent on keeping the hype train on its tracks through the lucrative holiday season.

From Salon • Nov. 21, 2025

Instead, they identified immense, separate rings formed from innumerable nested arcs.

From Science Daily • Nov. 10, 2025

For here he had seen maids roasting innumerable small squabs, each stuffed with fragrant dressing and wrapped in bacon.

From "Johnny Tremain" by Esther Hoskins Forbes