Weakened is a negative status effect and a battle mechanic that appears in Sonic Chronicles: The Dark Brotherhood.
In gameplay, when a target is inflicted with Weakened, he/she does less damage to opponents in battle. Targets inflicted with Weakened are signified by green and red spark-like dusks emitting from their body.
Weakened can be inflicted on both playable characters and enemies when they are hit by certain attacks, such as POW moves or regular attacks (in the playable characters' case). It can be cured by Rock Salt, Antidote, or Cure All Spray.