• 衰えおとろえ

  weakening, emaciation, decline

• 衰退すいたい

  decline, degeneration, decay, waning, ebbing

• 衰弱すいじゃく

  weakness, debility, breakdown, prostration

• 老衰ろうすい

  senility, senile decay, infirmity (through age)

• 盛衰せいすい

  rise and fall, ups and downs, welfare, vicissitudes

• 衰えるおとろえる

  to become weak, to decline, to wear, to abate, to decay, to wither, to waste away

• 衰幣すいへい

  decline

• 衰微すいび

  decline, decay, ebb

• 衰躯すいく

  emaciated body

• 衰兆すいちょう

  signs of decline

• 衰運すいうん

  declining fortunes

• 衰耗すいもう

  weaken and decline

• 衰残すいざん

  emaciated, worn-out

• 衰世すいせい

  this decadent world

• 衰色すいしょく

  fading color, fading colour, fading beauty

• 衰勢すいせい

  downward tendency, decay, decline

• 衰滅すいめつ

  decline, downfall, ruin(ation)

• 衰亡すいぼう

  decline and fall, ruin, downfall, collapse

• 衰死すいし

  becoming emaciated and die, wither away

• 五衰ごすい

  five signs of the impending death of a heavenly being

• 減衰げんすい

  attenuation, damping, decay

• 衰退期すいたいき

  phase of decline, ebb, twilight

• 衰弱死すいじゃくし

  death from prostration, death from emaciation

• 減衰率げんすいりつ

  attenuation (factor, rate)

• 減衰器げんすいき

  attenuator

• 減衰量げんすいりょう

  attenuation

• 衰退一途すいたいいっと

  (falling into a) continuous decline, being on the wane

• 興亡盛衰こうぼうせいすい

  rise and fall, prosperity and decline, vicissitudes

• 神経衰弱しんけいすいじゃく

  neurasthenia, nervous breakdown

• 全身衰弱ぜんしんすいじゃく

  general prostration

• 盛者必衰じょうしゃひっすい

  even the prosperous inevitably decay, sic transit gloria mundi, all that's fair must fade

• 栄枯盛衰えいこせいすい

  ups and downs of life, vicissitudes of fortune

• 消長盛衰しょうちょうせいすい

  prosperity and decay, rise and fall, ebb and flow, vicissitudes (of fortune)

• 盛衰興亡せいすいこうぼう

  rise and fall, ups and downs, waxing and waning, prosperity and decline, vicissitudes

• 減衰定数げんすいじょうすう

  damping ratio, decay constant

• 減衰係数げんすいけいすう

  attenuation coefficient

• 減衰時間げんすいじかん

  deceleration time

• 減衰歪みげんすいひずみ

  attenuation distortion

• 荷重減衰かじゅうげんすい

  weight decay

• 精神衰弱せいしんすいじゃく

  psychasthenia

• 衰え果てるおとろえはてる

  to be utterly spent or crushed

• 反射減衰量はんしゃげんすいりょう

  return loss

• 減衰ひずみげんすいひずみ

  attenuation distortion

• やせ衰えるやせおとろえる

  to become emaciated, to waste away, to grow thin and worn out

• 弱り衰えるよわりおとろえる

  to languish

• 古び衰えるふるびおとろえる

  to waste away

• エコー減衰器エコーげんすいき

  echo suppressor

• 衰替すいたい

  weakening, declining

• 必衰ひっすい

  inevitable decline (decay, collapse, etc.)

• 衰態すいたい

  weakened condition, state of decline