ain't

American  

[eynt] / eɪnt /

1. Nonstandard except in some dialects. contraction of am not; are not; is not.

2. Nonstandard. contraction of have not; has not; do not; does not; did not.

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ain't British  

/ eɪnt /

contraction

1. am not, is not, are not, have not, or has not

   I ain't seen it

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Usage

As a substitute for am not, is not, and are not in declarative sentences, ain't is more common in uneducated speech than in educated, but it occurs with some frequency in the informal speech of the educated, especially in the southern and south-central states. This is especially true of the interrogative use of ain't I? as a substitute for the formal and—to some—stilted am I not? or for aren't I?, considered by some to be ungrammatical, or for the awkward—and rare in American speech— amn't I? Some speakers avoid any of the preceding forms by substituting Isn't that so ( true, the case ) ? Ain't occurs in humorous or set phrases: Ain't it the truth! She ain't what she used to be. It ain't funny. The word is also used for emphasis: That just ain't so! It does not appear in formal writing except for deliberate effect in such phrases or to represent speech. As a substitute for have not or has not and—occasionally in Southern speech— do not, does not, and did not, it is nonstandard except in similar humorous uses: You ain't heard nothin' yet! See also aren't.

Etymology

Origin of ain't

First recorded in 1770–80; variant of amn't (contraction of am not ) by loss of m and raising with compensatory lengthening of a; aren't

Example Sentences

Said it before, will say it again: Pitino ain’t for everyone.

From The Wall Street Journal • Mar. 23, 2026

As someone — possibly Mark Twain — once said, it’s not what you don’t know that really gets you into trouble, but what you think you know that just ain’t so.

From MarketWatch • Mar. 18, 2026

In a second video played to the inquiry, Christopher could be heard saying "I just want to go" and "he ain't gonna let me leave for some reason".

From BBC • Mar. 5, 2026

“It’s actually made the job easier in a way, because I ain’t touching that bar.”

From Los Angeles Times • Feb. 23, 2026

“Summer,” he said to me once, “drop some of them bricks you keep hauling around with you. Life just ain’t that heavy.”

From "Missing May" by Cynthia Rylant