Ain't, is a slang way of saying am not.
I ain't fucking that slag.
by DaisyFreya';] February 08, 2012

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Top Definition
slang contraction of is not, are not, am not, do not or does not.
He ain't lazy, he just ain't got nothing to do.
by superrockstar125 February 10, 2003

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<negative third person singular> Chiefly American Colloquial Contraction

A single word that is equivalent to other words such as:
1) Am not
2) Are not
3) Is not

==> Most likely originated in the Southern States of America as it flows easily with their accent but has now been used in many places around the world.
"I aint going."
"We aint going."
"He aint going."
by Stuart Fletcher January 29, 2005

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Is now in a dictionary
Teacher: Ain't is not in the dictionary

Student: It's on the urbandictionary!
by martytiptoes October 20, 2010

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Contraction of am not and slang contraction for anything else.
I ain't gonna watch Joe Millionare 2 because it ain't good.
by Chase November 11, 2003

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Originally a non-slang word, ain't began as a contraction for "am not", as in "I ain't stupid." When people began to use it improperly as in "He ain't", which should have been "He isn't", people came to consider it improper use of language. Today, it's known to be used predominantly in the south and by uneducated people.
I ain't yo' momma.

He ain't goin' to eat those nasty baked beans.
by Pitoyable May 02, 2005

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1. a combination of the words are not.
2. a combination of the words am not.
1. You aint going.
2. I aint going.
by dixielightning July 26, 2003

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Is not.
Ain't ain't a word and you ain't spose to use it.
by Anonymous September 11, 2003

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