About-face is a term that denotes a complete change in direction, opinion, or behavior. There are several synonyms for the word about-face, including 'reversal,' 'turnaround,' '180-degree turn,' 'flip-flop,' 'change of heart,' and 'u-turn,' among others. These words suggest a sharp break from a previous course of action or thought process. For instance, a politician may perform an about-face on their election promises by changing their stance on a critical issue. In contrast, a company may undergo an about-face by switching from a conventional business model to a more innovative approach. Thus, the term about-face represents the idea of making a significant change that impacts one's conduct, opinion, or path.