Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “error”


noun [C/U]    /ˈer·ər/
a mistake , esp . in a way that can be discovered as wrong , or the making of such mistakes : [C] a spelling / mathematical error [U] Investigators said the train crash was caused by human error rather than mechanical failure .
(Definition of error noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
Focus on the pronunciation of error

More American English definitions for “error”

Definitions of “error” in other dictionaries

Word of the Day


a situation in which two people are friends

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More