Those who first use the new word might use it at first only with speakers of the source language who know the word, but at some point they come to use the word with those to whom the word was not previously known. To these speakers the word may sound 'foreign'. At this stage, when most speakers do not know the word and if they hear it think it is from another language, the word can be called a foreign word. There are many foreign words and phrases used in English such as bon vivant(French), mutatis mutandis (Latin), and Fahrvergnuegen (German).