A design, action, or decision that is clearly incorrect or inappropriate. Often capitalised; always emphasised in speech as if capitalised. The opposite of the right thing; more generally, anything that is not the Right Thing. In cases where "the good is the enemy of the best", the merely good - although good - is nevertheless the Wrong Thing. "In C, the default is for module-level declarations to be visible everywhere, rather than just within the module. This is clearly the Wrong Thing."

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