Do you know these words?

• おとろえる（たいりょくが〜/きおくりょくが〜）

  to become weak (one's memory/strength) ; to lose one's strength/memory

• としを　とる

  to get old ; to move on up ; to get on

• ろうか

  aging ; senility

• ろうかげんしょう

  senescence

• かなわない（びょうきには〜/としには〜）

  to give in to (illness/old age) ; to succumb ; cannot overcome