lacking physical strength or energy

कमजोर

English Usage: She felt weak after the long run.

Hindi Usage: लंबी दौड़ के बाद वह कमजोर महसूस कर रही थी।

the state or condition of lacking strength

कमजोरी

English Usage: His weakness was well known to his friends.

Hindi Usage: उसकी कमजोरी उसके दोस्तों को अच्छी तरह पता थी।

to make or become weaker

कमज़ोर करना

English Usage: The illness can weaken the immune system.

Hindi Usage: यह बीमारी इम्यून सिस्टम को कमजोर कर सकती है।