A double negative is when two negative words or constructions are used within a single clause. Sentences with double negatives are not grammatically correct . . . and they're confusing. ... So, when you use a double negative it ends up being the exact opposite of what you mean.
Is it OK to use a double negative?
Using two negatives usually turns the thought or sentence into a positive one. Double negatives are generally discouraged in English because they are considered to be poor grammar and they can be confusing.
What is a double negative example?
When two negative words are used in the same sentence they are called double negatives. Q: What is an example of a double negative? Some of the negative words are no, none, don't, and won't. An example of a double negative can be: She ain't seen nobody.