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.

To decrease physically in size, amount, numbers or surface.

To cause to decrease.

Becoming weaker or smaller.

Of the lunar phase: as it shrinks when viewed from the Earth.

The fact or act of becoming less or less intense.

The fact or act of becoming smaller.