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

One of the biggest promises of quantum computing is the ability to simulate molecules with unprecedented accuracy. —Rupendra Brahambhatt, Interesting Engineering, 14 Mar. 2026

Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. —Emily Kay Votruba, EverydayHealth.com, 13 Mar. 2026

Even though your custodian should provide you with the RMD for each year, don’t depend on the accuracy of the information provided to you by your custodian. —Elliot Raphaelson, The Orlando Sentinel, 13 Mar. 2026

An editor verified the accuracy of the information before publishing. —Nick Lichtenberg, Fortune, 13 Mar. 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