To droop or hang down due to weight or pressure.

To decrease in quality or strength.

गुणवत्ता या ताकत में कमी आना।

English Usage: His performance began to sag down during the latter part of the competition.

Hindi Usage: प्रतियोगिता के आखिरी भाग में उसकी प्रदर्शन कमज़ोर हो गया।