Also found in: Idioms.


1. Nonstandard except in some dialects. am not; are not; is not.
2. Nonstandard. have not; has not; do not; does not; did not.
[1770–80; variant of amn't (contraction of am not) by loss of m and raising with compensatory lengthening of a; compare aren ' t]
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, esp. in the southern and south-central states. This is especially true of the interrogative ain't I? used as a substitute for the formal am I not? or for aren't I? (considered by some to be ungrammatical) or for the awkward amn't I? (which is rare in American speech). Some speakers avoid all of the preceding forms by substituting Isn't that so (true, the case)? ain ' t occurs in set phrases: Ain't it the truth! The word is also used for emphasis: That just ain't so! It does not appear in formal writing except for deliberate (often humorous) effect 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 seen nothin' yet! See also aren't.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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References in classic literature ?
aint I right?" Edmond looked up absently from his letter.
"Dey aint no tin in him, Massa Will, I keep a tellin on you," here interrupted Jupiter; "de bug is a goole bug, solid, ebery bit of him, inside and all, sep him wing - neber feel half so hebby a bug in my life."
"No, dat he aint! - he aint find nowhar - dat's just whar de shoe pinch - my mind is got to be berry hebby bout poor Massa Will."
"Why, massa, taint worf while for to git mad about de matter - Massa Will say noffin at all aint de matter wid him - but den what make him go about looking dis here way, wid he head down and he soldiers up, and as white as a gose?
"No, massa, dey aint bin noffin unpleasant since den - 'twas fore den I'm feared - 'twas de berry day you was dare."
- cause de skull aint got not a bit ob a hand at all - nebber mind!
aint dis here my lef eye for sartain?" roared the terrified Jupiter, placing his hand upon his right organ of vision, and holding it there with a desperate pertinacity, as if in immediate dread of his master's attempt at a gouge.
Barry says he aint lazy exactly only he thinks it easier to pray for things than to work for them.
"This ship aint for beasts and cannibals and worse than beasts, any more.
The old gentleman send heaps of things, and is rather wearin, but means wal, and it aint my place to say nothin.
"Aint she a peart young un?" said Tom, holding her from him to take a full-length view; then, getting up, he set her on his broad shoulder, and began capering and dancing with her, while Mas'r George snapped at her with his pocket-handkerchief, and Mose and Pete, now returned again, roared after her like bears, till Aunt Chloe declared that they "fairly took her head off" with their noise.
'For I aint, you must know,' said Betty, 'much of a hand at reading writing-hand, though I can read my Bible and most print.