accurate

accurate

[ak-yer-it]
1.
free from error or defect; consistent with a standard, rule, or model; precise; exact.
2.
careful or meticulous: an accurate typist.

Origin:
1605–15; < Latin accūrātus carefully prepared (past participle of accūrāre), equivalent to ac- ac- + cūr(a) care + -ātus -ate1

accurateness, noun
hyperaccurateness, noun
superaccurateness, noun
unaccurateness, noun

1. true, unerring. See correct.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
 accurate (ˈækjərɪt) —adj 1. faithfully representing or describing the truth 2. showing a negligible or permissible deviation from a standard: an accurate ruler 3. without error; precise; meticulous 4. maths a.  (to n significant digits) representing the first n digits of the given number starting with the first nonzero digit, but approximating to the nearest digit in the final position: since π = 3.14159…, the approximation 3.1416 is accurate to 5 significant digits. b.  (to n decimal places) giving the first n digits after the decimal point without further approximation: π = 3.1415 is in this sense accurate to 4 decimal places [C16: from Latin accūrātus, past participle of accūrāre to perform with care, from cūra care] 'accurately —adv 'accurateness —n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

accurate
1610s, "done with care," from L. accuratus "prepared with care, exact," pp. of accurare "take care of," from ad- "to" + curare "take care of" (see cure). The notion of doing something carefully led to that of being exact (1650s). Related: Accuracy.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
At the same time, his references are precise and accurate.
Our economic outlook, for example, proved reasonably accurate.
The new program will produce a unified, and hopefully, more accurate sales
estimate.