- Dark - Every second piano key is black - Jet black - Pitch sounds in key - Very black - Very dark - Consisting of, or resembling, ink; soiled with ink; black.
- Belittle - Blacken reputation of - Defame - Nag dieter about slander - Speak Ill Of - To blacken thoroughly; to make very black. - Fig.: To blacken or sully; to defame.