inaccurate

Definitions

Mistaken or incorrect; not accurate. adjective …☝️ Source: The American Heritage Dictionary of the English Language, 5th Edition (view on wordnik.com)
Not accurate; not exact or correct; erroneous; of persons, disposed to commit errors; careless as regards accuracy of statement. …☝️ Source: The Century Dictionary (view on wordnik.com)
Synonyms Incorrect, inexact, blundering, loose. …☝️ Source: The Century Dictionary (view on wordnik.com)
Not accurate; not according to truth; inexact; not quite correct; incorrect; erroneous adjective …☝️ Source: The GNU version of the Collaborative International Dictionary of English (view on wordnik.com)
not exact adjective …☝️ Source: WordNet 3.0 (view on wordnik.com)

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1690s, from in- (1) "not" + accurate. Unaccurate is attested from 1670s. Related: Inaccurately (1660s).1660, 1670, 1690