Synonyms of countless

countless

adjective

ˈkau̇nt-ləs 

as in many

too many to be counted

I've told you countless times not to do that

Synonyms & Similar Words

• many
• numerous
• innumerable
• numberless
• untold
• uncountable
• uncounted
• myriad
• unnumbered
• innumerous
• beyond number
• infinite
• vast
• endless
• unlimited
• multitudinous

Antonyms & Near Antonyms

• enumerable
• countable
• limited
• numberable
• finite

Example Sentences

Recent Examples of countless

Together, these two drugs have saved countless lives and are prescribed for up to 20% of cancer patients to treat ovarian, bladder, breast, lung, and other types of cancer. — Veronique Greenwood, Time, 4 Aug. 2026

After 33 years, 11 records, over 3000 live shows, and countless appearances in film and television, Big Bad Voodoo Daddy is coming to the center. — Tania Azhang, Sacbee.com, 4 Aug. 2026

Since 2000, the ISS has hosted international crews and has been the site of countless groundbreaking scientific experiments made possible by its microgravity environment. — Brett Tingley, Space.com, 4 Aug. 2026

Since then, the Scottish Play—as it is often called in the theater world, to ward off bad luck—has been performed and adapted countless times, for stage and screen. — Literary Hub, 3 Aug. 2026