Meaning of Waning
Noun / বিশেষ্য / संज्ञा
to decrease in strength, intensity, etc.: Daylight waned, and night came on. Her enthusiasm for the cause is waning.
to decline in power, importance, prosperity, etc.: Colonialism began to wane after World War II.
to draw to a close; approach an end: Summer is waning.
(of the moon) to decrease periodically in the extent of its illuminated portion after the full moon. Compare wax2 (def 2).
a gradual decrease or decline in strength, intensity, power, etc.