对不对

對不對
duìbùduì
  1. right or wrong?
  2. Is it right?
  3. OK, yes? (colloquial)

CEDICT

  1. Used other than figuratively or idiomatically: see 對 /对 (duì), 不, 對 /对 (duì).
  2. used as a tag question: isn't it so?, right or wrong?, is it right?, OK, yes? (colloquial)

Wiktionary

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 不对 bùduì
  1. incorrect
  2. wrong
  3. amiss
  4. abnormal
  5. queer