<P> The word ain't is a contraction for am not, is not, are not, has not, and have not in the common English language vernacular . In some dialects ain't is also used as a contraction of do not, does not, and did not . The development of ain't for the various forms of to be not, to have not, and to do not occurred independently, at different times . The usage of ain't for the forms of to be not was established by the mid-18th century, and for the forms of to have not by the early 19th century . </P> <P> The usage of ain't is a continuing subject of controversy in English . Ain't is commonly used by many speakers in oral and informal settings, especially in certain regions and dialects . Its usage is often highly stigmatized, and it can be used by the general public as a marker of low socio - economic or regional status or education level . Its use is generally considered non-standard by dictionaries and style guides except when used for rhetorical effect . </P>

What is the meaning of ain't in english
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