1. Make more cheerful
   - lighten, buoy up 
2. Become more cheerful
   "after a glass of wine, he lightened up a bit"
   - lighten, buoy up 
3. Make lighter or brighter
   - brighten, lighten 
4. Become lighter
   "The room lightened up"
   - lighten

Derived forms: lightens up, lightened up, lightening up

Type of: alter, change, cheer, cheer up, chirk up, modify

• spue
• spumante
• spume
• spumescent
• spumy
• spun sugar
• spun yarn
• spunk
• spunky
• spur
• spur blight
• spur gear
• spur track
• spur wheel
• spur-of-the-moment
• spurge
• spurge family
• spurge laurel
• spurge nettle
• spurion
• spurious
• spurious correlation
• spurious wing
• spuriously
• spuriousness