想不到

xiǎngbudào
  1. unexpected
  2. hard to imagine
  3. it had not occurred to me
  4. who could have thought that

CEDICT

Entry Composition

1 想 xiǎng
  1. to think (about)
  2. to think of; to devise
  3. to think (that); to believe (that)
  4. to desire; to want (to)
  5. to miss (feel wistful about the absence of)
2 不到 bùdào
  1. not to arrive
  2. not reaching
  3. insufficient
  4. less than