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

According to researchers at Wuhan University, RGMP (recurrent geometric-prior multimodal policy) aims to improve grasping accuracy across a broader range of objects and enable robots to perform more complex manual tasks. —Jijo Malayil, Interesting Engineering, 28 Nov. 2025

The overall accuracy of AlphaFold’s predictions varies depending on protein type. —Jeremy Kahn, Fortune, 28 Nov. 2025

The model distinguished living organic matter from non-living sources with up to 98% accuracy. —Pranjal Malewar, New Atlas, 27 Nov. 2025

This figure has circulated widely in political commentary and media reports, prompting questions about the accuracy of the number. —Billal Rahman, MSNBC Newsweek, 27 Nov. 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