volte-face

• n. 完全改变；向后转

volte,转，旋转，词源同volume,face,脸。引申词义大转变。

volte-face

a reversal of opinion, 1819, French (17c.), from Italian volta faccia, literally "turn face," from volta, imper. of voltare "to turn" (from Vulgar Latin *volvita, from Latin volvere "to roll;" see volvox) + faccia (see face).