Ain't - (pronoun) A slang compound word that usually is replaced by the compound word "isn't" meaning "is not". Wether is a world is debateable, but if were to be a word, this would be the most correct defination.
He isn't going to the store right now.
(this would me grammatically correct to say this)
He ain't going to the store right now.
(this isn't a correct word because usually a compound word takes out one letter on the word, ain't, if you tried to add a letter to ain't you more than likely wouldn't get anything. But ain't just seems to sound better in syntax.)
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.
<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."
Contraction of am not and slang contraction for anything else.
I ain't gonna watch Joe Millionare 2 because it ain't good.
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.
Is now in a dictionary
Teacher: Ain't is not in the dictionary
Student: It's on the urbandictionary!
1. a combination of the words are not.
2. a combination of the words am not.
1. You aint going.
2. I aint going.
A word so easy to say and understand, English teachers don't want you using it and make you read war and peace.
Ain't= Am not
Child: I Ain't trippin nigga gimme the money.
Teacher: Page 1-500 now you illiterate fool!