- [verb] become dark or darker; "The sky darkened"
- [verb] become or make darker; "The screen darkend"; "He darkened the colors by adding brown"
- [verb] tarnish or stain; "a scandal that darkened the family's good name"
- [verb] make dark or darker; "darken a room"
- Search for synonyms for DARKEN
- black out, blacken out
- overcloud, cloud over, cloud up
- blind, dim
- obscure, benight, bedim
- overcast, cloud