Related Clues:

• What the lights do before the band comes out
• What's discovered in ultrasound imaging is badly lit
• Turn down a little, as lights
• Strained, as Indian tea is?
• Not even close to bright
• Opposite of bright
• Slow to learn
• Throw some shade?
• With poor visibility, just over half a kilometre?
• Not bright, as a light
• Dampen, as a headlight
• Like a low-wattage bulb
• Muted, as lights
• A little thick
• Not bright, as a lightbulb