Waning gibbous is a term used to describe the lunar phase in which the moon appears to be more than half illuminated but less than fully illuminated. Some synonyms for waning gibbous include the terms "lessening," "diminishing," and "fading." Other synonyms include "waning crescent," "waning half-moon," or "waning moon." These descriptive terms are useful for tracking the progress of the lunar cycle and understanding the intricate relationship between the moon and Earth. While there are many different synonyms for waning gibbous, each term provides a unique perspective on the complex interplay of light and shadow that defines the lunar cycle.