Volte-faces is a French term that is used to describe an abrupt change of opinion or behavior, especially in politics. While the term itself may not have a direct antonym, it can be described using words like consistency, predictability, and steadfastness. Some antonyms that can be used to contrast with the idea of a volte-face include unwavering, unchanging, and steadfast. Words like predictability, reliability, and consistency are also antonyms to the concept of volte-faces. Overall, these antonyms represent the opposite of an abrupt change of direction and imply a steady, consistent mindset.