暗転あんてん

1(theatrical) blackout Translated by Jiyomi
2taking a (sudden) turn for the worse ; rapid deterioration Translated by Jiyomi

noun (common) (futsuumeishi) · noun or participle which takes the aux. verb suru · intransitive verb

Kanji · tap to open

JMdict entry 1154670 · frequency rank 32. Source and licence.