In texts and speeches, an unfamiliar word is one word that is not so common or that cannot be understood by everyone either because it is a technical, complex or sophisticated word. Additionally, it is not recommended to include this type of words in texts or speeches that address general audiences and some people might not understand this type of words and can even stop reading a text or hearing a speech or loss their interest as the relationship between the speaker and the audience can be hurt. In the case of the passage presented, this occurs mainly due to the word "convivial" that means friendly or jovial but is a word some people might not know as it is quite complex or sophisticated. Therefore, the word that is unfamiliar and hurt the speaker's relationship with the audience is "Convivial".
