不明

bùmíng
  1. not clear
  2. unknown
  3. to fail to understand

CEDICT

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 明 míng
  1. bright
  2. opposite: dark 暗 àn
  3. (of meaning) clear
  4. to understand
  5. next
  6. public or open
  7. wise
  8. generic term for a sacrifice to the gods