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 of accuracy

• 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

Engineers use the physical measurements collected during core heating to test the accuracy of their mathematical reactor models. — Aman Tripathi, Interesting Engineering, 22 Oct. 2026

Despite entering camp as the favorite to win the job, Sanders struggled with his accuracy. — Antwan Staley, New York Daily News, 22 Oct. 2026

Administration officials have defended the accuracy of their lists, including in the lawsuit the Justice Department filed against California last week. — Kevin Rector, Los Angeles Times, 21 Oct. 2026

His unmasking fed an emerging panic over Wikipedia’s accuracy. — Julian Lucas, New Yorker, 21 Oct. 2026

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