A blunder refers to a "stupid, careless mistake". Specific instances include:
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Blunder (chess)
In chess, a blunder is a critically bad mistake that severely worsens the player's position by allowing a loss of , checkmate, or anything similar. It is usually caused by some tactical oversight, whether due to time trouble, overconfidence, or car ...
, a very poor move in chess
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Hopetoun Blunder, an event in Australian history
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Brand blunder, in marketing
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Himalayan Blunder, in Indian history
Television
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''Blunder'' (TV series), a British comedy programme first shown on E4 in 2006
See also
There are various colloquial terms, as a rule with slightly different connotations, for various forms and contexts of blunder. For example:
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Boner, which has been used both as a synonym for "howler" and for more material blunders
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