Midland American English in the context of "Atlas of North American English"

General American English, known in linguistics simply as General American (abbreviated GA or GenAm), is the umbrella accent of American English used by a majority of Americans, encompassing a continuum rather than a single unified accent. It is often perceived by Americans themselves as lacking any distinctly regional, ethnic, or socioeconomic characteristics, though Americans with high education, or from the (North) Midland, Western New England, and Western regions of the country are the most likely to be perceived as using General American speech. The precise definition and usefulness of the term continue to be debated, and the scholars who use it today admittedly do so as a convenient basis for comparison rather than for exactness. Some scholars prefer other names, such as Standard American English, though this can be a wider term encompassing more than just accent.

Standard Canadian English accents may be considered to fall under General American, especially in opposition to the United Kingdom's Received Pronunciation. Noted phonetician John C. Wells, for instance, claimed in 1982 that typical Canadian English accents align with General American in nearly every situation where British and American accents differ.

Texan English is the array of American English dialects spoken in Texas, primarily falling under Southern U.S. English. As one nationwide study states, the typical Texan accent is a "Southern accent with a twist". The "twist" refers to inland Southern U.S., older coastal Southern U.S., and South Midland U.S. accents mixing together, due to Texas's settlement history, as well as some lexical (vocabulary) influences from Mexican Spanish. In fact, there is no single accent that covers all of Texas and few dialect features are unique to Texas alone. The newest and most innovative Southern U.S. accent features are best reported in Lubbock, Odessa, somewhat Houston and variably Dallas, though general features of this same dialect are found throughout the state, with several exceptions: Abilene and somewhat Austin, Corpus Christi, and El Paso appear to align more with Midland U.S. accents than Southern ones.

Inland Northern (American) English, also known in American linguistics as the Inland North or Great Lakes dialect, is an American English dialect spoken primarily by White Americans throughout much of the U.S. Great Lakes region. The most distinctive Inland Northern accents are spoken in Chicago, Detroit, Cleveland, Milwaukee, Buffalo, Rochester, and Syracuse. The dialect can be heard as far east as upstate New York and as far west as eastern Iowa and even among certain demographics in the Twin Cities, Minnesota. Some of its features have also infiltrated a geographic corridor from Chicago southwest along historic Route 66 into St. Louis, Missouri; today, the corridor shows a mixture of both Inland North and Midland American accents. Linguists often characterize the northwestern Great Lakes region's dialect separately as North-Central American English.

The early 20th-century accent of the Inland North was the basis for the term "General American", though the regional accent has since altered, due to the Northern Cities Vowel Shift, its now-defining chain shift of vowels that began in the 1930s or possibly earlier. A 1969 study first formally showed lower-middle-class women leading the regional population in the first two stages (raising of the TRAP vowel and fronting of the LOT/PALM vowel) of this shift, documented since the 1970s as comprising five distinct stages. However, evidence since the mid-2010s suggests a retreat away from the Northern Cities Shift in many Inland Northern cities and toward a less marked American accent. Various common names for the Inland Northern accent exist, often based on city, for example: Chicago accent, Detroit accent, Buffalo accent, etc.

The Low-Back-Merger Shift is a chain shift of vowel sounds found in several accents of North American English, beginning in the last quarter of the 20th century and most significantly involving the low back merger (which collapses together the low-back vowel sounds: /ɑː/, /ɒ/, and /ɔː/ in words like PALM, LOT, and THOUGHT respectively) accompanied by the lowering and backing of each of the front-lax vowels: /æ/, /ɛ/, and /ɪ/ (in words like TRAP, DRESS, and KIT respectively).

The back and downward movement of all the front lax vowels was first noted as distinguishing certain California English speakers in 1987, and it was soon known by linguists as the California Vowel Shift. Then, it came to distinguish certain Canadian English speakers in a 1995 study, now known in that variety as the Canadian Shift; today, it helps define Standard Canadian English. The California and Canadian Shifts were initially reported as two separate phenomena, but the same basic pattern was next documented among some younger varieties of Western New England English, Western American English, Pacific Northwest English, and Midland American English, all in speakers born from the 1980s onward. Linguists have proposed possible relationships between the low back merger and the similarly structured shifts in these regional dialects, though no unifying hypothesis is dominantly agreed upon yet. Assuming the similar chain shifts found in Canada and various parts of the U.S. have a single common origin, a variety of names have been proposed for this trans-regional chain shift which, besides the low-back-merger shift, include the Third Dialect Shift, Elsewhere Shift, Short Front Vowel Shift, and North American Shift.