一転(いってん)

いってん
noun / adverb
sudden change, reversal, complete turnaround
1. sudden change, reversal, complete turnaround
A dramatic and sudden change in situation, mood, weather, or circumstances. Often used adverbially with して.
天気(てんき)が一転(いってん)した。
The weather changed suddenly.
試合(しあい)の流(なが)れが一転(いってん)した。
The flow of the game reversed completely.
穏(おだ)やかだった空(そら)が一転(いってん)して、激(はげ)しい雷雨(らいう)になった。
The calm sky suddenly changed into a violent thunderstorm.

一転(いってん) describes a dramatic reversal or sudden shift. It is commonly used in news reports, sports commentary, and weather descriptions.

WORD FORMATION:
一(いち) (one) + 転(てん) (turn, revolve) = one turn/reversal

COMMON PATTERNS:

  • 一転(いってん)する: to change suddenly
  • 一転(いってん)して〜になる: to turn into ~ suddenly
  • 状況(じょうきょう)が一転(いってん)する: the situation reverses

NOTE:
一転(いってん) implies a complete, often surprising change. It is not used for gradual changes.

general
Added 2026.2.15 11:43
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