Here are some examples of words that originated in America and have become widely accepted in English:
* Bluff: Originally meaning a high cliff, it was later adopted in the US to refer to a deceptive tactic.
* Cowboy: A term that originated in the American West to describe a cattle herder.
* Skunk: This word, originally used by the Algonquin people, came into English via American usage.
* Yankee: Originally referring to English colonists in New England, it later came to be associated with Americans in general.
* Gravy train: A phrase that originated in the US to describe a lucrative or easy job.
* OK: This widely used abbreviation likely originated in the US, although its exact origins are debated.
It's important to note that many words and phrases considered "American" were actually borrowed from other languages or dialects. For example, "trail" comes from the Old French "traille," and "ranch" comes from the Spanish "rancho."
Overall, while American English has enriched the English language with new vocabulary, it's important to remember that English is a global language with contributions from many cultures and dialects.