darkside

noun5

1. •
   The side of something that is in darkness or unlit, or has less illumination.
2. •
   (figurative) The side of something that is metaphorically dark, i.e. evil, distressing or otherwise undesirable; the negative aspect of something.

   • [B]lack metal is by definition concerned with the occult as seen in its lyrical fixation with Satan or darkside tribal paganism. — 2003
3. •
   Synonym of nightside (“the side of a planet that faces away from the sun around which it orbits”).

   • Terraport would be in darkside now, and her great lights would be fused into a single tiny eye winking mockery at him – if he chose to slide back his porthole screen. — 1950
4. •
   A style of electronic music, being a form of hardcore characterized by discordant sounds.

   • The label closely observed the shifts in techno during the 90s, being a staple source of ‘darkside’ hardcore in 1992. — 1994
5. •
   Synonym of farside (“the side of a moon that faces away from the planet that it orbits”).

   • On the lighter side, Cassini should be coming out of darkside soon and run smack-dab into the distress siren. — 2002