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

Hublot says the self-winding HUB4700 chronograph delivers accuracy, precision, and a power reserve of 50 hours. —Rachel Cormack, Robb Report, 25 Oct. 2025

The new robot automates this movement, allowing inspections to be completed far more quickly and with improved accuracy. —Kaif Shaikh, Interesting Engineering, 24 Oct. 2025

An editor verified the accuracy of the information before publishing. —Dave Smith, Fortune, 24 Oct. 2025

More recently, a study showed that dogs can use their sense of smell to pick out blood samples from people with cancer with almost 97 percent accuracy. —Clarissa Brincat, Popular Science, 23 Oct. 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