wane

/weɪn/

Misollar

His powers are on the wane.
Love's intensity can wane as familiarity grows.

ot noun

A gradual diminution in power, value, intensity etc.
The lunar phase during which the sun seems to illuminate less of the moon as its sunlit area becomes progressively smaller as visible from Earth.
The end of a period.
A rounded corner caused by lack of wood, often showing bark.

fe’l verb

To progressively lose its splendor, value, ardor, power, intensity etc.; to decline.
Said of light that dims or diminishes in strength.
Said of the Moon as it passes through the phases of its monthly cycle where its surface is less and less visible.
Said of a time period that comes to an end.

Manbalar: Wiktionary (Free Dictionary API orqali), Datamuse, Tatoeba (CC BY 2.0 FR), MyMemory.