Compounds of うぐ

• ぐうぐう
  (adv) (on-mim) fast (asleep)
  snoring or grumbling sound
• うぐいす色
  (n) greenish brown
• うぐいす張り
  (n) nightingale (flooring)
  method of laying floors to deliberately make a noise (like a nightingale's call) when walked across (security feature)
• ぐうぐう寝ちゃう
  (v5u) (ktb:) to fall sound asleep