Compounds of 明るい

• 明るい
  (adj-i) (1) bright
  colourful
  (2) cheerful
  (3) familiar (with)
  knowledgeable (about)
  (4) fair (e.g. politics)
  clean
  (P)
• 薄明るい
  (adj-i) slightly bright
• 夜目にも明るい
  (exp,adj-i) bright even in the dark
  clearly visible at night