What are Two negative modifiers used with the verb of a sentence called?

Two negative modifiers used with the verb of a sentence are called a double negative.

For example:

* "I don't have no money."

* "Don't" is a negative modifier, and "no" is another negative modifier.

* "She ain't never seen nothing like that."

* "Ain't" is a negative modifier, and "never" and "nothing" are both negative modifiers.

Double negatives are generally considered grammatically incorrect in standard English, as they create confusion about the intended meaning. They can also be considered informal or even slangy.