Compounds of 正体

• 正体
  (n) natural shape
  one's true colors
  one's true colours
  true character
  consciousness
  senses
  (P)
• 正体不明
  (n,adj-no) unidentifiable
  unidentified
• 幽霊の正体見たり枯れ尾花
  (exp) if you look carefully, it's more ordinary than it appears (lit: the ghost, when examined closely, was withered silver grass)