A double negative refers to the use of two forms of negation in the same sentence.
- I don’t have none.
- We aren’t never leaving.
Double negatives are not used in American Standard English, but are common in African American Vernacular English and in some regional dialects. Double negatives are also common in some foreign languages.
It is important to note that in most environments, but especially in business and formal settings, the use of double negatives is highly discouraged.