对不上

對不上
duìbùshàng
  1. to disagree
  2. I can't agree with that.

CEDICT

Entry Composition

1 对 duì
  1. right; correct
  2. towards; at; for
  3. concerning; regarding
  4. to treat (sb a certain way)
  5. to face
  6. (bound form) opposite; facing; matching
  7. to match together; to adjust
  8. to fit; to suit
  9. to answer; to reply
  10. to add; to pour in (a fluid)
  11. to check; to compare
  12. classifier: couple; pair
2 不上 bùshàng
  1. (verbal complement) unable to
  2. to not go up; to not ascend
  3. unable to

Related entries

意见不合 yìjiànbùhé
  1. to disagree
  2. dissent
这两个人因意见不合，而争得面红耳赤不欢而散。

Due to differing opinions between the two, they argued angrily, before leaving unhappily.

Source: Tatoeba

争执 zhēngzhí
  1. to dispute
  2. to disagree
  3. to argue opinionatedly
  4. to wrangle
爭執啥也解決不了。

Fighting won't settle anything.

Source: Tatoeba