Summary

Portrait of H. L. Mencken H. L. Mencken The American Language — Americanisms in England (1919)

To placate and to antagonize are examples. The Concise Oxford and Cassell distinguish between the English and American meanings of the latter: in England a man may antagonize only another man, in America he may antagonize a mere idea or thing. But, as the brothers Fowler show, even the English meaning is of American origin, and no doubt a few more years will see the verb completely naturalized in Britain.
Source: Wikisource

Portrait of H. L. Mencken H. L. Mencken The American Language — Americanisms in England (1919)

Rambunctious is not in any of the new English dictionaries, but in Cassell I find rumbustious, probably its father.
It is easy to overestimate the importance of these exportations, and of the transient slang-phrases that go with them. It takes a long while for one of them to become thoroughly naturalized in England, and even then the business is commonly achieved only at the cost of a change in meaning or spelling. To the Englishman Americanisms continue to show an abhorrent quality, even after he has begun to use them
Source: Wikisource

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