countless

adjective

count·​less ˈkau̇nt-ləs 

: too numerous to be counted : myriad, many

countlessly adverb

Synonyms of countless

• many
• numerous
• innumerable
• numberless

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

Indeed, Richard the Lionheart, after countless campaigns and victories, was slain by a crossbowman (ironically, because this was a weapon that Richard championed greatly against the wishes of the Church). — Erik Kain, Forbes.com, 27 July 2026

Choosing native plants for your landscape provides food and habitat for countless insects, birds, and other wildlife year-round. — Markis Hill, Kansas City Star, 26 July 2026

The challenge for all independent grocers is getting that fresh-is-best message to break through to consumers who are pulled in countless directions by competing voices that most often have far bigger advertising and marketing budgets. — Denise Crosby, Chicago Tribune, 26 July 2026

People enjoy them in countless ways, including being folded into shortcake, mixed into fruit salad, dipped in chocolate, piled on pancakes, stirred into yogurt, blended into smoothies or simply eaten by the handful as a refreshing snack. — Daryl Austin, USA Today, 26 July 2026

Word History

First Known Use

1593, in the meaning defined above

Kids Definition

countless

adjective

count·​less ˈkau̇nt-ləs 

: too numerous to be counted : innumerable