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

Hoover wore a glove on his right hand for the first time this season, and his accuracy was off to start the game. —Steven Johnson, Fort Worth Star-Telegram, 9 Nov. 2025

New data science tools are rapidly improving the speed and accuracy of detecting slight changes. —Matthew W. Kreuter, CNN Money, 8 Nov. 2025

The process involved blind testing of the recipes by members, tasting by their families and an editing process that strove for recipe uniformity and accuracy. —Molly Guthrey, Twin Cities, 8 Nov. 2025

Humans outperform robots in accuracy The researchers compared human performance with that of a robotic tactile sensor trained using a Long Short-Term Memory (LSTM) algorithm. —Aamir Khollam, Interesting Engineering, 7 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