error

/ˈer-ər/

Middle English errour, from Anglo-French, from Latin error, from errare

noun

  1. an act or condition of ignorant or imprudent deviation from a code of behavior

  2. an act involving an unintentional deviation from truth or accuracy

  3. an act that through ignorance, deficiency, or accident departs from or fails to achieve what should be done : such, as

made an error in adding up the bill

error mistake blunder slip lapse mean a departure from what is true, right, or proper. error suggests the existence of a standard or guide and a straying from the right course through failure to make effective use of this. mistake implies misconception or inadvertence and usually expresses less criticism than error.

noun

  1. the estimated uncertainty in experimental data

noun phrase

  1. a poor decision

The company has admitted that it made an error in judgment in trying to expand too quickly.