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

Oura told customers its ring could measure different sleep stages with 95% accuracy, said Shireen Clarkson, co-founder of Clarkson Law Firm, which filed the suit. — Daniel De Visé, USA Today, 21 Aug. 2026

When severe weather strikes, carriers must rapidly scale claims operations while maintaining consistency, responsiveness and estimate accuracy. — David Tobias, Forbes.com, 21 Aug. 2026

Bridges and overhangs were clean, confirming excellent exposure calibration and the printer's ability to resolve intricate features without sacrificing dimensional accuracy. — Michael Lydick, PC Magazine, 21 Aug. 2026

Yet for all their accuracy, atomic clocks are also extremely delicate. — Ameya Paleja, Interesting Engineering, 21 Aug. 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