不是

bùshi
fault; blame

CEDICT

Homographs

不是 bùshì
  1. no
  2. is not
  3. not

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
=2 是 shì
  1. to be (followed by substantives only)
  2. correct; right; true
  3. (respectful acknowledgement of a command) very well
  4. (adverb for emphatic assertion)
=2 是 shì variant of 是 shì