i-adjective
weak; feeble; lacking strength
Describes physical weakness or lack of power, often used for people, actions, or things that seem frail or ineffective.
彼は力弱い声で助けを求めた。
He asked for help in a weak voice.
その子はまだ力弱くて、重いものを持てない。
The child is still weak and cannot carry heavy things.