In standard English, using two negative words in the same sentence usually creates a grammar error called a double negative. This happens when two negative forms are used together — making the sentence unclear or even giving the opposite meaning.
A double negative occurs when two negative words (like not, don’t, nothing, never, no one) are used in the same clause. In English, only one negative word is needed to express a negative meaning.
In English grammar, two negatives cancel each other out — so the sentence becomes confusing or even positive. For example, “I don’t know nothing” literally means “I know something” — which is likely not what the speaker intended.
Use only one negative word in a sentence. If you use a verb with not or don’t, then follow it with a positive form like anything, anyone, or ever.
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