ain’t 
Ain’t is a contraction used in place of "am not," "is not," "are not," "has not," or "have not." Common in Appalachian and Southern speech - and in plenty of other places, too. It can also refer to a relative, as in 'aunt'.
Hillbilly Dude Says...
Pronunciation
[AYNT]
Meaning & Usage
- Am not / Is not / Are not (contraction)
Elmer:
You goin’ to the barn?
Estel:
I ain’t.
- Has not / Have not (contraction)
Elmer:
You fed the hogs?
Estel:
I ain’t yet.
- Aunt (noun)
Elmer:
You see Aint Tootsie down'ere?
Estel:
Nope. But I have Uncle Smoky.
other spellings: aint
Origin
"Ain’t" has been in English since at least the 1700s, formed from contractions like "am not" → "an’t" → "ain’t." While many see it as informal, it’s been a staple of rural and regional dialects for centuries.
Notes
In Appalachian and Southern speech, "ain’t" is used freely and without apology. It can replace multiple verb forms - and folks often use it for emphasis.