waning

UK: ˈweɪnɪŋ | US: ˈweɪnɪŋ

Definition
  1. adj. becoming smaller or less (e.g., the waning moon)

  2. n. the process of decreasing in size, strength, or intensity (e.g., the waning of influence)

Structure
wan <to decrease>ing <present participle suffix>
Etymology

The root "wan" derives from Old English "wanian," meaning "to lessen or diminish," related to the Proto-Germanic *wanōną. The "-ing" suffix forms the present participle, indicating an ongoing action. Historically, "waning" was used primarily for the moon's phases but expanded metaphorically to describe any gradual decline.

Examples
  1. The waning moon cast faint light over the fields.

  2. Her enthusiasm for the project is waning.

  3. The waning days of summer brought cooler nights.

  4. His political power is in steady waning.

  5. The waning support forced the leader to reconsider.