noun, takes する

Colloquialism. Esp. in fiction.
  1. joining the dark side, joining the forces of evil.

Variations

Pronunciation Kanji Kana Is Common
 
闇堕ち やみおち
 
闇落ち やみおち

Contained Kanji Breakdown

get dark, gloom, disorder
やみ アン オン (11th)
gate, counter for cannons
モン かど と (2nd, N2)
sound, noise
おと オン ね (1st, N4)
stand up, rise, set up
た.つ リツ たつ (1st, N4)
kettle lid radical (no. 8)
トウ (Kentei 1)
grass, straw, herbs
to divide
one, one radical (no.1)
イチ いっ ひと- (1st, N5)
day, sun, Japan
ひ にっ ニチ (1st, N5)
degenerate, descend to, lapse into
お.ちる ダ くず.す (9th, N1)
melon, wrap
ダ ずい (Kentei 1)
possess, have, exist
ユウ あり あ.る (3rd, N4)
left hand, cliff(厂) variant
month, moon
つき ゲツ ガツ (1st, N5)
soil, earth, ground
ド つち は (1st, N5)