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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.

Maybe Kagan sought to prevent the majority opinion from undermining countless other state laws that restrict speech in the medical context.

From Slate • Mar. 31, 2026

“He leaves behind his music, his label, his mixes, and the countless thousands of dancers who found themselves — truly found themselves — in the middle of one of his sets,” his representatives wrote.

From Los Angeles Times • Mar. 30, 2026

The squeeze on supply has pushed oil and natural gas prices higher, with drastic knock-on effects for supply chains in countless industries.

From Barron's • Mar. 30, 2026

Neighboring countries now treated as nonplayer characters can, in fact, act in countless ways to disarm this threat.

From The Wall Street Journal • Mar. 27, 2026

How was she to winnow down her countless questions to a mere troika?

From "The Long-Lost Home" by Maryrose Wood