gathering gloom
- duskDimming after sundown
- twilightLight after sunset
- shadowsDark areas from blocked light
- darknessTotal absence of light
- descendingMoving downward
encroaching · creeping · murky · ominous · foreboding · melancholy · despair · overcast · storm · clouds · dimming · fading · evening · somber · brooding · heaviness · oppressive · looming