darkside

Short definition from Wiktionary

Noun

1. 1
   The side of something that is in darkness or unlit, or has less illumination.
2. 2
   The side of something that is metaphorically dark, i.e. evil, distressing or otherwise undesirable; the negative aspect of something.
3. 3
   Synonym of farside (“the side of a moon that faces away from the planet that it orbits”).
4. 4
   Synonym of nightside (“the side of a planet that faces away from the sun around which it orbits”).
5. 5
   A style of electronic music, being a form of hardcore characterized by discordant sounds.