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Synonyms

countless

American  
[kount-lis] / ˈkaʊnt lɪs /

adjective

  1. too numerous to count; innumerable.

    the countless stars.

    Synonyms:
    unlimited, myriad, endless, numberless

countless British  
/ ˈkaʊntlɪs /

adjective

  1. innumerable; myriad

"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

Other Word Forms

  • countlessly adverb

Etymology

Origin of countless

First recorded in 1580–90; count 1 + -less

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.

In addition to childcare costs — which you should at least not have to pay while your husband is out of work — there’s diapers, baby formula, sanitary products, clothing and countless trips to the doctor’s office.

From MarketWatch

Together, these countless faint events create what is called the gravitational-wave background.

From Science Daily

Modern sponges contain skeletons made of countless microscopic, glass-like structures called spicules.

From Science Daily

It’s also led to countless viral memes on social media.

From BBC

The president, the survivor of countless negotiations with his long-suffering creditors, chose his words carefully.

From MarketWatch