暗あん転てん

noun, noun or participle which takes 'suru', intransitive verb

theatrical blackout; stage blackout

Primarily a theater term: the lights go out on stage, often for a scene change or dramatic effect. Also used metaphorically for a sudden dark turn in a situation.

• 舞ぶ台たいが暗あん転てんし、次つぎの場ば面めんに移うつった。

  The stage blacked out and moved to the next scene.

noun, noun or participle which takes 'suru', intransitive verb

sudden turn for the worse; rapid deterioration

Figurative extension of the theatrical blackout: a situation, mood, or condition suddenly worsens. Often used in news or commentary.

• 試し合あいは後こう半はんに暗あん転てんし、逆ぎゃく転てん負まけを喫きっした。

  The game took a sudden turn for the worse in the second half, and they lost after being ahead.

• 景けい気きが暗あん転てんする兆きざしが見みえ始はじめた。

  Signs of a rapid economic downturn began to appear.