Darkening

Verb

1. Present participle of darken

Full definition of darkening

Noun

1. The act of something becoming darker.
• 1978, Gerald Leonard Howett, ‎Kenneth Low Kelly, ‎E. Thomas Pierce, Emergency vehicle warning lights: state of the artNEGATIVE FLASHES — Brief darkenings of a light that is otherwise steadily on.

Anagrams

• endarking