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A double negative occurs when a single clause contains two negative elements, such as combining 'did not' with 'nothing' or 'nobody'. In standard English, two negative words mathematically cancel each other out, producing an affirmative meaning like 'not impossible' to mean possible. In many informal dialects, multiple negatives reinforce a single negative idea, known as negative concord. However, standard written and professional English requires either a single negative word or a negative auxiliary paired with a neutral any-word.

We did not find any errors during the quarterly audit.