ㄈㄢfānㄖㄢˊrán

  1. 忽然改變文選·陸機·平原內史》:一朝翻然以為蕞爾不足𠫤,區區可悲。」幡然」。

suddenly and completely (realize, change one's strategy etc)​, also written 幡然[fan1 ran2]