a volte-face

(formal)

a sudden change of a belief or plan to the opposite of what it was before In the early 90's he made a complete political volte-face, moving from the Republican Party to the Democrats.

Common Names:

Name	Pronounced	Usage
Taliesin	tal-ee-ES-in (Welsh)	Welsh, Arthurian Romance
Azaria	-	Biblical
Leatrice	-	English
Phoibe	-	Greek Mythology, Ancient Greek, Biblical Greek
Prudentius	-	Late Roman
Shakila	-	Arabic