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Word

countless

adjective C1
/ˈkaʊntləs/

Too many to be counted or very many.

countless: Too many to be counted or very many.

Meanings

adjective

Too many to be counted; extremely numerous.

adjective

Happening many times; repeated very often.

countless: Happening many times; repeated very often.

Definition

Countless describes a number or amount that is extremely large and hard or impossible to count. It is often used to emphasize how many times something has happened or how many items, people, or details there are. In everyday English, it usually means “very many,” not literally infinite.

Examples

  • I’ve heard that story countless times, yet the ending still catches me off guard.
  • She faced countless small setbacks during the project, but she stayed focused and finished on time.
  • They exchanged countless messages before agreeing on a plan that suited everyone.
  • The museum’s archives contain countless photographs that capture everyday life across decades.

Common mistake

Learners sometimes use "countless" with clearly countable small numbers (e.g., "countless three") instead of using it for very large, indefinite quantities.