What does mistake mean?
A mistake is an error in what someone thinks, says, does, or fails to do. As a noun, it usually refers to an individual wrong action or judgment: a careless slip, a bad decision, or a failure to understand a situation correctly. The common phrase “make a mistake” shows that the word can describe both simple errors and more serious blunders without changing its basic meaning. As a verb, “mistake” describes thinking or judging incorrectly, and “mistake A for B” identifies one person or thing as another. In everyday use, the word is neutral rather than harsh, although its seriousness depends on context. A small mistake may be an ordinary part of learning, while a major mistake can have substantial consequences. The word is also useful for discussing how people interpret evidence, recognize patterns, and respond to failure.
An act, decision, belief, or result that is wrong or misguided; an error.
"The calculation was based on a simple arithmetic mistake."
The phrase “make a mistake” is the most natural general expression. “Learn from your mistakes” is common in educational and reflective contexts.
To misunderstand or misjudge someone or something, especially by taking one person or thing for another.
"I mistook the signal for an indication that the train was about to leave."
In the construction “mistake A for B,” the word describes a false identification or belief; it can also be used more generally for an incorrect interpretation.
The plural is used for individual errors and for multiple instances of error: “She corrected several mistakes in the report.”
"The editor found a series of mistakes in the manuscript."
A mistake becomes most instructive when it is treated as information rather than simply as failure.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does mistake come from?
The word comes from Middle English and combines the prefix “mis-” with “take.” Its earliest uses referred to taking or understanding something wrongly, and the modern noun developed from these older verb meanings. The prefix “mis-” comes ultimately from Latin and is widely used in English to indicate error or incorrectness, as in words such as “misuse,” “misread,” and “misjudge.” The familiar expression “make a mistake” is also older than some modern figurative uses of the word, but remains the standard way to describe an error.
Related word forms
How mistake is actually used
The noun is very common in neutral, formal, and informal contexts. “Make a mistake” is the usual expression; “do a mistake” is generally less natural in standard English. As a verb, “mistake” often takes “for,” as in “mistake someone for someone else,” and can imply a mistaken belief or identity rather than a deliberate error.
Easily confused with mistake
A mistake is a broader error in action, thought, or judgment, while a misstatement is specifically an inaccurate or misleading statement.