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

Its special appeal lies not in overt complexity but in its unwavering consistency and broad appeal, serving as a significant gateway for countless consumers entering the world of tequila. —Hudson Lindenberger, Forbes.com, 2 June 2025

And the annals of cinema are filled with countless iconic examples, from Cary Grant in North by Northwest to Tom Cruise in Risky Business to Tommy Lee Jones and Will Smith in Men in Black. —Eric Twardzik, Robb Report, 2 June 2025

Jencks and Silver’s normative pathway of design typologies may be thrown into reverse gear as universal formulas disaggregate into countless bespoke fixes. —Glenn Adamson, Artforum, 1 June 2025

There have been countless incidents of Lumma targeting people's personal data (more on this later), but the good news is that Microsoft has taken it down. —Kurt Knutsson, FOXNews.com, 1 June 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