Americanist noun 3adjective 2forms 3 noun3 •An expert in the study of America. •Somebody who favors the values of the USA. •A proponent of the Americanist phonetic notation. adjective2 •Favoring the values of the USA. •Of or relating to a phonetic notation developed for transcription of Native American and European languages. See Americanist phonetic notation. formsAmericanists · more Americanist · most Americanist