begloom

be- +‎ gloom

begloom (third-person singular simple present beglooms, present participle beglooming, simple past and past participle begloomed)

1. (transitive, rare) To make gloomy; darken.
2. (transitive, archaic) To sadden.
   • 1864, John Rorke, Fancies on the photograph, a poem:

     No cold can chill them, and no fire consume
     No light can daze, no darkness can begloom
     Nor blank vacuity 'twixt orb and orb

• gloom
• gloomy