Volte-face is a term that refers to a sudden change of opinion or direction. Its antonyms would be consistency, reliability and steadfastness. A person who is consistent and reliable stays true to their beliefs and opinions, and is not easily swayed by new information or viewpoints. Such people are considered dependable and trustworthy. Steadfastness refers to unwavering commitment to a cause or belief, no matter what obstacles come their way. Such individuals are focused, determined and unflinching in their pursuit of goals. While volte-face can be seen as a sign of flexibility or open-mindedness, its opposite traits of consistency and steadfastness can also be admirable qualities in individuals.