1. Not made dim or less bright
   "undimmed headlights"; "surprisingly the curtain started to rise while the houselights were still undimmed"
   - bright

Antonym: dimmed

• sleepyhead
• sleepyheaded
• sleet
• sleety
• sleeve
• sleeved
• sleeveless
• sleigh
• sleigh bed
• sleigh bell
• sleight
• sleight of hand
• slender
• slender centaury
• slender knapweed
• slender lady palm
• slender loris
• slender rush
• slender salamander
• slender spike rush
• slender wheatgrass
• slender wild oat
• slender-bodied
• slender-tailed meerkat
• slender-waisted