English Reference
adjective · noun

waning

adj. · n.
US /ˈweɪnɪŋ/ UK /wˈeɪnɪŋ/ wan·ing

  1. 01 C1 Advanced Literary

    adj.getting smaller, weaker, or less powerful over time.

    adj.characterised by a gradual decrease in intensity, power, or influence.

    Simple

    The king struggled to maintain control as his waning influence led to more protests.

    In context

    The administration faced significant challenges in passing the new legislation due to their waning popularity among suburban voters.

  2. 02 C1 Advanced Technical Science

    adj.describes the moon when the bright part you see is getting smaller.

    adj.pertaining to the period of the lunar cycle between a full moon and a new moon, during which the visible illuminated area decreases.

    Simple

    The night was very dark because there was only a thin, waning moon in the sky.

    In context

    Astronomers noted that the waning crescent would provide ideal conditions for observing distant nebulae without excessive light interference.

    Usage

    Usually placed before the noun.

  3. 03 C2 Proficiency LiteraryFormal

    n.the process of something becoming less intense or smaller.

    n.the act or process of diminishing in size, strength, or importance.

    Simple

    We are witnessing the waning of an era as traditional shops close down.

    In context

    The historian argued that the waning of imperial power was a result of internal economic instability rather than external military pressure.

    declinediminution

In 1985, when their popularity appeared to be waning, they wiped the floor with every other act at Live Aid.

The Guardian· 1 Sept 2026

Brand New Day’s success comes as audiences’ interest in films set in the Marvel Cinematic Universe, and in superhero films as a whole, had been waning.

The Guardian· 19 Aug 2026

Etymology 1

From Middle English waninge, alteration of earlier waniand, waniende, from Old English waniende, from Proto-Germanic wanōndz, present participle of Proto-Germanic wanōną (“to wane”), equivalent to wane + -ing.

Etymology 2

From Middle English waning, waninge, wonunge, from Old English wanung (“waning; diminution”), from Proto-Germanic *wanungō, equivalent to wane + -ing.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin gem-pro *wanōną
Level C1 · Advanced
Frequency Occasional
Updated