Main entry: lighten, lighten up
Definition: become lighter
Usage: The room lightened up
Main entry: brighten, lighten, lighten up
Definition: make lighter or brighter
Usage: The paint will brighten the room
Main entry: lighten, lighten up, buoy up
Definition: become more cheerful
Usage: after a glass of wine, he lightened up a bit
Main entry: lighten, lighten up, buoy up
Definition: make more cheerful
Usage: the conversation lightened me up a bit