noun
troubled times; turbulent era
Refers to a historical period marked by war, disorder, or social upheaval. Often used in contrast with 治世 (peaceful reign).
戦国時代は長い乱世だった。
The Warring States period was a long era of turmoil.
乱世を生き抜く知恵が求められる。
Wisdom to survive turbulent times is required.