countless

adjective

count·​less ˈkau̇nt-ləs 

: too numerous to be counted : myriad, many

countlessly adverb

Synonyms

• innumerable
• innumerous
• myriad
• numberless
• uncountable
• uncounted
• unnumbered
• untold

Examples of countless in a Sentence

There are countless reasons why that would not be a good idea.

I've been there countless times.

Recent Examples on the Web

This grand hotel has hosted countless celebrities, athletes, presidents and royalty, all drawn to its legendary luxury. —Forbes Travel Guide, Forbes, 21 Jan. 2025

The Pilates classes, both one-on-one and in group settings, will be taught by Bryony Deery, the movement expert whose app—Pilates by Bryony—has helped countless people start learning the exercise modality. —Justin Fenner, Robb Report, 21 Jan. 2025

Among the countless people who lost their homes to the fires, celebrities include Tina Knowles, Madlib, Jhené Aiko, Keyshia Cole, and more. —Regina Cho, VIBE.com, 21 Jan. 2025

There are countless definitions of democracy, but virtually all Americans agree on several core criteria: free and fair elections, checks and balances, peaceful transfers of power, free speech. —Nathaniel Rakich, ABC News, 21 Jan. 2025

Word History

First Known Use

1588, in the meaning defined above

Kids Definition

countless

adjective

count·​less ˈkau̇nt-ləs 

: too numerous to be counted : innumerable