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

Integrity checks of sales and property records will be performed to improve data accuracy as part of the initiative, the department said. —Christian Olaniran, CBS News, 20 Dec. 2025

Depending on the persona or context used in prompting large language models, current models subtly tilt toward particular positions – even when factual accuracy remains intact. —Adrian Kuenzler, The Conversation, 19 Dec. 2025

The White House plans to break up a key weather and climate research center in Colorado, a move experts say could jeopardize the accuracy of forecasting and prediction systems. —Scott Neuman, NPR, 19 Dec. 2025

Agents now use miniature red dot sights that project a red dot onto a target while giving the agent better peripheral vision, a tool officials say improves accuracy and situational awareness. —David Culver, CNN Money, 18 Dec. 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