Compounds of 以前

• 以前
  (n-adv,n-t) ago
  since
  before
  previous
  (P)
• 以前に
  (adv) ago
  since
  before
  previously
  heretofore
  earlier
• 人間以前
  (adj-no) prehuman
• 有史以前
  (n,adj-no) prehistory