Describing someone or something as weak, frail, or delicate; suggesting physical or emotional fragility.
彼女は小柄でか弱く見えるが、意志は強い。
She looks small and fragile, but her will is strong.
か弱い子どもを守る必要がある。
There is a need to protect vulnerable/fragile children.
風邪で体がか弱くなっている。
My body is weakened by the cold.