Compounds of うちに

• 近いうちに
  (adv) before long
• 経たぬうちに
  (exp) before ... days (months, etc.)
• 知らないうちに
  (exp,adv) before one knew it
  before one realized it
  (P)
• 鉄は熱いうちに打て
  (exp) strike while the iron is hot
• 鉄は熱いうちに鍛えよ
  (exp) (obsc) strike while the iron is hot