frailty

The frailty of the old man was evident as he walked slowly.

老人の虚弱さは、彼がゆっくりと歩く様子から明らかだった。

His frailty was his inability to make decisions quickly.

彼の弱点は、迅速に決断を下せないことだった。

His frailty led him to make poor moral choices.

彼の道徳的な弱さが、彼に悪い道徳的選択をさせた。