A word of farewell is a term used to indicate the act of saying goodbye or bidding adieu to someone. However, there are a plethora of synonyms that can be used to express this sentiment in different ways. For example, one may use "farewell speech," "parting words," "valediction," "bye-bye," "so long," "adieu," "goodbye," "au revoir," "bon voyage," "fare thee well," or "see you later." Each of these synonyms carries their own unique connotations, depending on the situation and emotional tone being conveyed. Whether formal or informal, jovial or somber, there are numerous ways to express a word of farewell.