accuracy

noun

ac·​cu·​ra·​cy ˈa-kyə-rə-sē 

ˈa-k(ə-)rə-

plural accuracies

1

: freedom from mistake or error : correctness

checked the novel for historical accuracy

2

a

: conformity to truth or to a standard or model : exactness

impossible to determine with accuracy the number of casualties

b

: degree of conformity of a measure to a standard or a true value compare precision entry 1 sense 2a

Synonyms

• precision
• preciseness
• perfection

Examples of accuracy in a Sentence

Each experiment is performed twice to ensure accuracy.

The police questioned the accuracy of his statement.

He could not say with any accuracy what he had seen.

Several managers have tried to increase the speed and accuracy of the workers.

Recent Examples on the Web

Some agency officials have voiced concerns about the accuracy of the tool’s legal interpretations. —James Broughel, Forbes.com, 28 July 2025

So far, measurements have found no difference between the two to an accuracy of 1.5 parts in a billion. —Clara Moskowitz, Scientific American, 28 July 2025

An editor verified the accuracy of the information before publishing. —Nick Lichtenberg, Fortune, 27 July 2025

Miller, Lord and their designers worked diligently on nailing the accuracy in Project Hail Mary's math and science, consulting Weir for questions on astronomy. —Tommy McArdle, People.com, 27 July 2025

Word History

Etymology

accur(ate) + -acy

First Known Use

1644, in the meaning defined at sense 1

Rhymes for accuracy

• inaccuracy

Kids Definition

accuracy

noun

ac·​cu·​ra·​cy ˈak-yə-rə-sē 

plural accuracies

1

: freedom from error : correctness

2

: conformity to a standard : exactness