Dictionary.com
Thesaurus.com
Showing results for countless. Search instead for countless widths.
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.

After an hour on a freeway passing through suburban towns of countless rows of identical worker housing, we turned onto a more rustic road, headed into the country’s mountainous region.

From Slate • Mar. 30, 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

But then, in a moment that countless big-name players to come would experience through the decades, Law saw his low shot saved by a diving Ian McKechnie.

From BBC • Mar. 28, 2026

I ran countless brown envelopes around the grounds of the mansion today and saw the most curious things.

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.