英语词源字典 - 在线词源网站

African-American (adj.): there are isolated instances from the late 18th and early 19th centuries, but the modern use is a re-invention first attested 1969 (in reference to the African-American Teachers Association) which became the preferred term in some circles for "U.S. black" (noun or adjective) by the late 1980s. Mencken, 1921, reports Aframerican "is now very commonly used in the Negro press." Afro-American is attested in 1853, in freemen's publications in Canada. Africo-American (1817 as a noun, 1826 as an adjective) was common in abolitionist and colonization society writings.
all-American: 1888, as the name of a barnstorming baseball team composed of players from various teams across the United States. From all + American.
America: 1507, in Cartographer Martin Waldseemüller's treatise "Cosmographiae Introductio," from Modern Latin Americanus, after Amerigo Vespucci (1454-1512) who made two trips to the New World as a navigator and claimed to have discovered it. His published works put forward the idea that it was a new continent, and he was first to call it Novus Mundus "New World." Amerigo is more easily Latinized than Vespucci.

The name Amerigo is Germanic, said to derive from Gothic Amalrich, literally "work-ruler." The Old English form of the name has come down as surnames Emmerich, Emery, etc. The Italian fem. form merged into Amelia.

Colloquial pronunciation "Ameri-kay," not uncommon 19c., goes back to at least 1643 and a poem that rhymed the word with away. Amerika "U.S. society viewed as racist, fascist, oppressive, etc." first attested 1969; the spelling is German, but may also suggest the KKK.
It is interesting to remember that the song which is essentially Southern -- "Dixie" -- and that which is essentially Northern -- "Yankee Doodle" -- never really had any serious words to them. ["The Bookman," June 1910]

FREDONIA, FREDONIAN, FREDE, FREDISH, &c. &c.
These extraordinary words, which have been deservedly ridiculed here as well as in England, were proposed sometime ago, and countenanced by two or three individuals, as names for the territory and people of the United States. The general term American is now commonly understood (at least in all places where the English language is spoken,) to mean an inhabitant of the United States; and is so employed, except where unusual precision of language is required. [Pickering, 1816]
American: 1570s (n.); 1590s (adj.), from Modern Latin Americanus, from America (q.v.); originally in reference to what now are called Native Americans; the sense of "resident of North America of European (originally British) descent" is first recorded 1640s (adj.); 1765 (n.).
American dream: coined 1931 by James Truslow Adams (1878-1949), U.S. writer and popular historian (unrelated to the Massachusetts Adamses), in "Epic of America."
[The American Dream is] that dream of a land in which life should be better and richer and fuller for everyone, with opportunity for each according to ability or achievement. It is a difficult dream for the European upper classes to interpret adequately, and too many of us ourselves have grown weary and mistrustful of it. It is not a dream of motor cars and high wages merely, but a dream of social order in which each man and each woman shall be able to attain to the fullest stature of which they are innately capable, and be recognized by others for what they are, regardless of the fortuitous circumstances of birth or position. [Adams]
Others have used the term as they will.
Americanism (n.): 1781, in reference to words or phrases distinct from British use, coined by John Witherspoon (1723-1794), president of Princeton College, from American + -ism. (American English "English language as spoken in the United States" is first recorded 1806, in Webster.) Americanism in the patriotic sense "attachment to the U.S." is attested from 1797, first found in the writings of Thomas Jefferson.
I have been not a little disappointed, and made suspicious of my own judgment, on seeing the Edinburgh Reviews, the ablest critics of the age, set their faces against the introduction of new words into the English language; they are particularly apprehensive that the writers of the United States will adulterate it. Certainly so great growing a population, spread over such an extent of country, with such a variety of climates, of productions, of arts, must enlarge their language, to make it answer its purpose of expressing all ideas, the new as well as the old. [Jefferson to John Waldo, Aug. 16, 1813]
Americanization (n.): 1816, noun of state or action from Americanize.
Americanize (v.): 1797, from American + -ize. Related: Americanized; Americanizing.
Amerind: 1899, coined by Maj. John Wesley Powell (1834-1902) at the Bureau of American Ethnology, where he was director, from American + Indian.
Amerindian (adj.): 1900; see Amerind, of which it is the derived adjective.
Anglo-American: 1738, from Anglo- + American. Originally often in contrast to German immigrants. In contrast to non-English neighboring or border people in the U.S. from 1809 (adj.); 1834 (n.). Meaning "pertaining to both England and the United States" is from 1812.
Anti-American (adj.): also antiamerican, 1788 (n.), in reference to British parliamentary policies, from anti- + American. As an adjective by 1838. Related: Anti-Americanism "opposition to what is distinctly American," 1844.
Latin America: 1862; see Latin (adj.). Related: Latin American (adj.), 1871.
Mesoamerica (n.): 1948, from meso- + America.
un-American (adj.): "not characteristic of American principles or methods, foreign to U.S. customs," 1818, from un- (1) "not" + American (adj.).
Everything is un-American that tends either to government by a plutocracy or government by a mob. [Theodore Roosevelt, 1917]
americium: "The chemical element of atomic number 95, a radioactive metal of the actinide series. Americium does not occur naturally and was first made by bombarding plutonium with neutrons", 1940s: from America (where it was first made) + -ium.
Americanese: "American English; English which contains many Americanisms", Mid 19th cent. From American + -ese. Compare earlier American English.