waning

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a gradual decrease in magnitude or extent (Freq. 1)
- the waning of his enthusiasm was obvious
- the waxing and waning of the moon
• Ant:
waxing
• Derivationally related forms:
wane
• Hypernyms:
decrease, lessening, drop-off

II - adjective

(of the Moon) pertaining to the period during which the visible surface of the moon decreases
- after full moon comes the waning moon
• Ant:
waxing