Americanism

Mrs. Morton was well known for her Americanisms, her swagger dinner parties, and beautiful Paris gowns.

A lot of other supposed Americanisms aren't Americanisms either. It's sometimes thought that "transportation" instead of the good old "transport" is an example of that annoying US habit of bolting on needless extra syllables to perfectly good words, but "transportation" is used in British English from 1540.

There has been much spluttering about the prince’s use of ‘Americanisms’ in a letter to Emmanuel Macron, but the truth is more complicated […] So, where do we get the idea that -ize is an Americanism?

"The most important difference between our plan and that of our opponent is that our plan will put America first," Trump said. "Americanism, not globalism, will be our credo."

Moreover, the enthusiasm with which Hecker’s ideas had been received among Catholic liberals in France served to increase Leo XIII’s suspicion that Americanism was yet another attempt, not so very different from the Gallicanisms of the past, to assert the independence of a national church from Rome.