volte-face (noun)

1. The architect's volte-face in design resulted in a complete transformation of the building's facade.

2. The protagonist's volte-face towards the evil spirits turned the horror film into a true nightmare.

3. After a profound spiritual experience, the priest experienced a volte-face in his beliefs and dedicated his life to helping others.

4. When asked if he believed in ghosts, the comedian made a volte-face and playfully replied, 'I used to... but they always let me down!'