Compounds of 衰

• 減衰
  (n,vs) attenuation
  damping
  decay
• 衰え
  (n) weakening
  emaciation
  decline
  (P)
• 衰運
  (n) declining fortunes
  decadence
• 衰躯
  (n) emaciated body
• 衰残
  (adj-na,n) emaciated
  worn-out
• 衰死
  (n,vs) becoming emaciated and die
  wither away
• 衰弱
  (n,vs,adj-no) weakness
  debility
  breakdown
  prostration
  (P)
• 衰色
  (n) fading color
  fading colour
  fading beauty
• 衰世
  (n) this decadent world
• 衰勢
  (n) downward tendency
  decay
  decline
• 衰態
  (n) weakening
  decline
• 衰替
  (n,vs) declining
  weaken
• 衰退
  (n,vs) decline
  decay
  (P)
• 衰兆
  (n) signs of decline
• 衰微
  (n,vs) decline
  decadence
  ebb tide
• 衰幣
  (n) decline
• 衰亡
  (n,vs) ruin
  downfall
  collapse
• 衰滅
  (n,vs) decline
  downfall
  ruin(ation)
• 衰耗
  (n,vs) weaken and decline
• 衰頽
  (n,vs) decline
  decadence
  waning
  ebb tide
• 盛衰
  (n) rise and fall
  ups and downs
  welfare
  vicissitudes
  (P)
• 必衰
  (n) bound to decline, decay, or collapse
• 老衰
  (n,vs,adj-no) senility
  senile decay
  infirmity (through age)
  (P)
• 減衰器
  (n) attenuator
• 減衰率
  (n) attenuation (factor, rate)
• 減衰量
  (n) (comp) attenuation
• 衰える
  (v1,vi) to become weak
  to decline
  to wear
  to abate
  to decay
  to wither
  to waste away
  (P)
• 栄枯盛衰
  (n) ups and downs of life
  vicissitudes of fortune
• 興亡盛衰
  (n) rise and fall
  prosperity and decline
  vicissitudes
• 減衰係数
  (n) (comp) attenuation coefficient