A farewell remark is a phrase used to bid someone goodbye. Commonly used farewell remarks include 'BYE' (3 letters), 'ADIEU' (5 letters), 'ADIOS' (5 letters), and 'ALOHA' (5 letters). These words are used in many different languages and cultures, and each one has its own unique meaning. For example, 'BYE' is a casual way of saying goodbye, while 'ADIEU' is a more formal way of expressing farewell. 'ADIOS' is a Spanish word for goodbye, and 'ALOHA' is a Hawaiian word that can mean both hello and goodbye.