1. to decrease in strength, intensity, etc.: Daylight waned, and night came on. Her enthusiasm for the cause is waning.
2. to decline in power, importance, prosperity, etc.: Colonialism began to wane after World War II.
3. to draw to a close; approach an end: Summer is waning.
4. (of the moon) to decrease periodically in the extent of its illuminated portion after the full moon.Compare wax2 (def 2). noun
5. a gradual decrease or decl
"supports can be waning in/at/on months."
"demands can be waning since autumns."
"surges can be waning with loans."
"pressures can be waning as to datas."
"momentums can be waning in couples."
This list can help you learn new vocabulary more quickly and be able explore other words more easily.