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Synonyms

inaccurate

American  
[in-ak-yer-it] / ɪnˈæk yər ɪt /

adjective

  1. not accurate; incorrect or untrue.

    Synonyms:
    faulty, wrong, erroneous, loose, inexact

inaccurate British  
/ ɪnˈækjʊrɪt /

adjective

  1. not accurate; imprecise, inexact, or erroneous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does inaccurate mean? Inaccurate describes something that is incorrect, false, or not quite right, as in I came home at 9:30 last night, so saying I was out all night is inaccurate. Inaccurate is the opposite of accurate, which describes something being free of defects or errors. You might describe a scale is inaccurate if it doesn’t show the precise weight of something. Inaccurate can also describe something that is wrong or untrue. You could claim that the lie your brother told about you is inaccurate, especially if there’s a bit of truth in what he said but overall it’s wrong. Example: The results of the test were inaccurate, but they can be used to improve the next one.

Other Word Forms

  • inaccurately adverb
  • inaccurateness noun

Etymology

Origin of inaccurate

First recorded in 1730–40; in- 3 + accurate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is inaccurate and unfair to characterize work produced in the manner described by any of these authors as “AI-generated.”

From The Wall Street Journal • Apr. 3, 2026

That case, the company said, “related to an engineer following inaccurate advice that an AI tool inferred from an outdated internal wiki,” and none involved “AI-written code.”

From Los Angeles Times • Mar. 30, 2026

He wants to see proof that the DOJ was given inaccurate information by ICE before he lets its lawyers off the hook.

From Slate • Mar. 27, 2026

Dr Katherine Gilmore, a consultant in community gynaecology and sexual and reproductive healthcare at the South Tyneside and Sunderland NHS Foundation Trust, says she sees patients "all the time" who have seen inaccurate information.

From BBC • Mar. 25, 2026

One wrong formula on their part—or one inaccurate piece of data provided to me or one mistaken calculation by me—could mean a disaster for the astronaut and a tragedy for his family.

From "Reaching for the Moon" by Katherine Johnson