きゅうてん【急転】
a sudden change急転する change suddenly; take a sudden turn急転直下all of a sudden; all at once事態は急転直下解決し...
きゅうてんかん【急転換】
a sudden change彼は計画の急転換を迫られたHe was forced to make a sudden change in his plans.
きゅうてんちょっか【急転直下】
all of a sudden; all at once事態は急転直下解決したThe situation was suddenly resolved.
きゅうてんする【急転する】
change suddenly; take a sudden turn