Question

In what cases," ain't "can be used ? ​

Answer 1

Answer:

Ask The Editor | Learner's Dictionary. The word ain't is considered by many to be incorrect or "bad" English but it is common in the very informal speech of some people. It can be used to mean am not, are not, is not, have not, and has not.1706, originally a contraction of am not, and in proper use with that sense until it began to be used as a generic contraction for are not, is not, etc., in early 19c. Cockney dialect of London; popularized by representations of this in Dickens, etc., which led to the word being banished from correct English