The 2006
Atlas of North American English surmises that "if one were to recognize a type of
North American English to be called 'General American'" according to data measurements of vowel pronunciations, "it would be the configuration formed by these three" accent regions:
(Standard) Canada, the
American West, and the
American Midland. The following charts present the vowels that converge across these three dialect regions to form an
unmarked or generic American English sound system.
Vowel length Vowel length is not
phonemic in General American, and therefore vowels such as are customarily transcribed without the length mark. Phonetically, the vowels of GA are short when they precede the
fortis consonants within the same syllable and long elsewhere. (Listen to the
minimal pair of .) All unstressed vowels are also shorter than the stressed ones, and the more unstressed syllables follow a stressed one, the shorter it is, so that in
lead is noticeably longer than in
leadership. (See
Stress and vowel reduction in English.)
Vowel tenseness are considered to compose a
natural class of
tense pure vowels (
monophthongs) in General American. All of the tense vowels except and can have either monophthongal or diphthongal pronunciations (i.e. vs ). Diphthongs are the most usual realizations of and (as in
stay and
row ), which is reflected in the way they are transcribed, though they are often perceptually regarded by speakers as monophthongs. Monophthongal realizations are still possible, most commonly in unstressed syllables; here are audio examples for
potato and
window . In the case of and , the monophthongal pronunciations () are in
free variation with diphthongs (). As indicated in above phonetic transcriptions, is subject to the same variation (also when monophthongal: ), but its mean phonetic value is usually somewhat less central than in modern Received Pronunciation (RP). varies between back and central .
Assigning of tense vowels to loanwords The class of tense pure vowels manifests in how GA speakers treat recent
loanwords, particularly borrowed in the last century or two, since in the majority of cases stressed syllables of foreign words are assigned one of these six vowels, regardless of whether the original pronunciation has a tense or a lax vowel. An example of this phenomenon is the Spanish word
macho, Middle Eastern (for instance Turkish) word
kebab, and German name
Hans, which are all pronounced in GA with the tense , the vowel, rather than lax , the vowel, as in Britain's
Received Pronunciation (which approximates the original languages' pronunciation in using a lax vowel).
Pre-nasal tensing For most speakers, the
short a sound as in or , which is not normally a tense vowel, is pronounced with tensing—the
tongue raised, followed by a centering
glide—whenever occurring before a
nasal consonant (that is, before , and, for many speakers, ). This sound may be broadly phonetically transcribed as (as in and ), or, based on one's own
unique accent or regional accent, variously as or . In the following audio clip, the first pronunciation is the tensed one for the word
camp, much more common in American English than the second, which is more typical of British English . Linguists have variously called this "short
a raising", "short
a tensing", "pre-nasal /æ/ tensing", etc.
Tense vowels before L Before dark in a
syllable coda, and sometimes also are realized as centering diphthongs . Therefore, words such as
peel and
fool are often pronounced and .
, , , and vowels Unrounded The American phenomenon of the vowel (often spelled in words like
box, don, clock, notch, pot, etc.) being produced without
rounded lips, like the vowel, allows the two vowels to unify as a single
phoneme, usually transcribed in IPA. A consequence is that some words, like
father and
bother, rhyme for most Americans. This
father-bother merger is normal throughout the country, except in northeastern
New England English (such as the
Boston accent), the
Pittsburgh accent, and variably in some older
New York accents, which may retain a rounded articulation of
bother, keeping it distinct from
father.
– merger in transition The vowel in a word like versus the vowel in are undergoing a merger, the
cot–caught merger, in many parts of North America, but not in certain regions. American speakers with a completed merger pronounce the two historically separate vowels with the same sound (especially in the
West,
Great Plains region, northern
New England,
West Virginia and
western Pennsylvania), but other speakers have no trace of a merger at all (especially middle-aged or older speakers in the
South, the
Great Lakes region, southern New England, and the
Philadelphia–Baltimore and
New York metropolitan areas) and so pronounce each vowel with distinct sounds . Among speakers who distinguish between the two, the vowel of
cot is often a
central or slightly advanced
back , while is pronounced with more rounded lips and possibly phonetically higher in the mouth, close to or . Furthermore, there are dialectal differences regarding the amount of rounding of , with speakers from Baltimore, New York and Philadelphia having a more rounded vowel than other dialects. Among speakers who do not distinguish between them, thus producing a
cot–caught merger, usually remains a back vowel, , sometimes showing lip rounding as . This is why it is sometimes called the
low back merger. Therefore, even mainstream Americans vary greatly with this speech feature, with possibilities ranging from a full merger to no merger at all. In the West, for instance, , , , and are all typically pronounced the same, falling under one phoneme. A transitional stage of the merger is also common in scatterings throughout the United States, most consistently in 1990s and early 2000s research in the
American Midlands lying between the historical dialect regions of the North and the South. Meanwhile, younger Americans, in general, tend to be transitioning toward the merger. According to a 2003 dialect survey carried out across the country, about 61% of participants perceived themselves as keeping the two vowels distinct and 39% do not. A 2009 follow-up survey put the percentages at 58% non-merging speakers and 41% merging.
– split American accents that have not undergone the
cot–caught merger (the
lexical sets and ) have instead retained a
– split: a 17th-century distinction in which certain words (labeled as the
lexical set) separated away from the set. The split, which has now reversed in most British English, simultaneously shifts this relatively recent set into a merger with the (
caught) set. Having taken place prior to the unrounding of the
cot vowel, it results in lengthening and perhaps raising, merging the more recently separated vowel into the vowel in the following environments: before many instances of , , and particularly (as in
Austria, cloth, cost, loss, off, often, etc.), a few instances before (as in
strong, long, wrong), and variably by region or speaker in
gone,
on, and certain other words.
and vowels The phonetic quality of () varies in General American. It is often an (
advanced) open-mid back unrounded vowel : . Many Midland, Southern, African-American, and younger speakers nationwide pronounce it somewhat more centralized in the mouth. Also, some scholars analyze to be an allophone of (the unstressed vowel in words like ,
banana,
oblige, etc.), that surfaces when stressed, so and may be considered to be in
complementary distribution, comprising only one phoneme.
in special words The vowel, rather than the one in (as in Britain), is used in
function words and certain other words like
was, of, from, what, everybody, nobody, somebody, anybody, and, for many speakers
because and sometimes even
want, when stressed.
Pre-voiceless raising Many speakers split the sound based on whether it occurs before a voiceless consonant or not. Thus, in
rider, it is pronounced , but in
writer, it is raised and potentially shortened to (because is a voiceless consonant while is not). Thus, words like
bright, hike, price, wipe, etc. with a following voiceless consonant (such as ) use a raised vowel sound compared to
bride, high, prize, wide, etc. Because of this sound change, the words
rider and
writer , for instance, remain distinct from one another by virtue of their difference in height (and length) of the diphthong's starting point (unrelated to both the letters
d and
t being pronounced in these words as alveolar flaps ). The sound change also applies across word boundaries, though the position of a word or phrase's stress may prevent the raising from taking place. For instance, a
high school in the sense of "secondary school" is generally pronounced ; however, a
high school in the literal sense of "a tall school" would be pronounced . The
sound change began in the
Northern,
New England, and
Mid-Atlantic regions of the country, and is becoming more common across the nation. Many speakers outside of General American areas in the
Inland North,
Upper Midwestern, and
Philadelphia dialect areas raise before voiced consonants in certain words as well, particularly , and . Hence, words like
tiny,
spider,
cider,
tiger,
dinosaur,
beside,
idle (but sometimes not
idol), and
fire may contain a raised nucleus. The use of , rather than , in such words is unpredictable from the phonetic environment alone, but it may have to do with their acoustic similarity to other words with before a voiceless consonant, per the traditional Canadian-raising system. Some researchers have argued that there has been a
phonemic split in those dialects, and the distribution of the two sounds is becoming more unpredictable among younger speakers.
variation in final unstressed /ɪŋ/ General American speakers typically realize final unstressed , like at the end of
singing, as or, in a particularly casual
style, . However, many speakers from
California, other
Western states including those in the
Pacific Northwest, and the
Upper Midwest realize final unstressed as when ("short
i") is raised to become ("long
ee") before the underlying is converted to , so that
coding, for example, is pronounced , homophonous with
codeine.
Weak vowel merger The vowel in unstressed syllables generally merges with the vowel , so that the noun
effect is pronounced like verb
affect, and
abbot and
rabbit rhyme. The quality of the merged vowel varies considerably based on the environment but is typically more open, like , in word-final or
open-syllable word-initial positions (making
salon ,
cilantro and
comma ), but more close and often more fronted, like , in other positions (making
rabbit and
minus ). (Despite phonetic variation within the latter vowel, the symbol is used consistently on this page.) The word-final allophone is typically retained before inflectional suffixes, potentially creating minimal pairs such as ''Rosa's
vs. roses'' .
Vowels before R R-colored vowels The
lexical sets and lett are merged as the sequence , a
schwa vowel plus , which can also be analyzed as a simple
syllabic , though often phonetically transcribed as the
R-colored schwa . Therefore,
perturb, pronounced in British
Received Pronunciation (RP), is (
phonetically ) in General American pronunciation. Similarly, the words
forward and
foreword, which are phonologically distinguished in RP as and , are
homophonous in GA: (or phonetically ). As General American is a rhotic accent (therefore lacking the comm–lett merger), some minimal pairs that are distinguished by length in RP are still distinguished in GA by the absence of an ; compare the place name
Downton and the
common noun downturn (RP vs. , with no trace of ). Thus, the merger affects only some minimal pairs found in RP. Moreover, what is historically , as in
hurry, merges to in GA as well, so the historical phonemes , , and are all
neutralized before . Thus, unlike in most English dialects of England, is not a true phoneme in General American but merely a different notation of for when this phoneme precedes and is stressed—a convention preserved in many sources to facilitate comparisons with other accents.
Vowel mergers before R Most North American accents are characterized by the mergers of certain vowels when they occur before intervocalic . The only exceptions exist primarily along the
East Coast. •
Mary–marry–merry merger in transition: According to the 2003 dialect survey, nearly 57% of participants from around the country self-identified as merging the sounds (as in the first syllable of
parish), (as in the first syllable of
perish), and (as in
pear or
pair). The merger is largely complete in most regions of the country, the major exceptions being much of the Atlantic Coast and southern
Louisiana. •
Hurry–furry merger: The pre- vowels in words like
hurry and
furry are merged in most American accents to or a syllabic consonant . Roughly only 10% of American English speakers acknowledge the distinct
hurry vowel before , according to the same dialect survey aforementioned. •
Mirror–nearer merger in transition: The pre- vowels in words like
mirror and
nearer are merged or very similar in most American accents. The quality of the historic
mirror vowel in the word
miracle is quite variable. • Americans vary slightly in their pronunciations of
R-colored vowels such as those in and , which are sometimes monophthongized towards and or
tensed towards and respectively. That causes pronunciations like for
pair/
pear and for
peer/
pier. Also, is often reduced to , so that
cure,
pure, and
mature may all end with the sound , thus rhyming with
blur and
sir. The word
sure is also part of the rhyming set as it is commonly pronounced . •
Horse–hoarse merger: This merger makes the vowels and before homophones, with homophonous pairs like
horse/hoarse, corps/core, for/four, morning/mourning, war/wore, etc. homophones. Many older varieties of American English still keep the sets of words distinct, particularly in the extreme Northeast, the South (especially along the Gulf Coast), and the central Midlands, but the merger is evidently spreading and younger Americans rarely show the distinction. This merger is also found in most modern varieties of
British English. •
"Short o" before r before a vowel: In typical North American accents (both U.S. and Canada), the historical sequence (a short
o sound followed by
r and then another vowel, as in
orange,
forest,
moral, and
warrant) is realized as , thus further merging with the already-merged (
horse–hoarse) set. In the U.S., a small number of words (namely,
tomow, sy, sow, bow, and
mow) usually contain the sound instead and thus merge with the set (thus,
sorry and
sari become homophones, both rhyming with
starry).
Lists of monophthongs, diphthongs, and R-colored vowels == Terminology ==