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

The countless celebrities, including Jennifer Aniston, Taylor Swift, and Sarah Jessica Parker, who have all carried some iteration of the hands-free style recently. —Alex Nelson, Peoplemag, 1 June 2024

There are countless battery packs to pick from out there, but not many that have thousands of rave reviews from travelers. —Olivia Young, Travel + Leisure, 1 June 2024

Both black bears and grizzly bears eat huckleberries, chokecherries, snowberries, mountain ash berries, and hawthorn berries, among countless other varieties. —Katie Hill, Outdoor Life, 30 May 2024

For instance, that classic Marshall sound heard on countless hard rock albums that’ll set you back thousands (or possibly tens of thousands) and require the kind of maintenance that a decades-old amp always needs? —Spin Contributor, SPIN, 30 May 2024

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