bright
adjective
emitting or reflecting light readily or in large amounts
“the sun was bright and hot”
“a bright sunlit room”
Oppositesdullhaving strong or striking color
“bright dress”
“brilliant tapestries”
characterized by quickness and ease in learning
“some children are brighter in one subject than another”
“smart children talk earlier than the average”
Synonymssmarthaving lots of light either natural or artificial
“the room was bright and airy”
“a stage bright with spotlights”
made smooth and bright by or as if by rubbing; reflecting a sheen or glow
“bright silver candlesticks”
“a burnished brass knocker”
splendid
“the bright stars of stage and screen”
“a bright moment in history”
not made dim or less bright
“undimmed headlights”
“surprisingly the curtain started to rise while the houselights were still undimmed”
Synonymsundimmedclear and sharp and ringing
“the bright sound of the trumpet section”
“the brilliant sound of the trumpets”
Synonymsbrilliantcharacterized by happiness or gladness
“bright faces”
“all the world seems bright and gay”
likely to turn out well in the future
“had a bright future in publishing”
“the scandal threatened an abrupt end to a promising political career”
adverb
with brightness
“the stars shone brilliantly”
“the windows glowed jewel bright”
Source: WordNet 3.1, Princeton University