岂不是

豈不是
qǐbùshì

wouldn't it be; isn't it

Wiktionary

Entry Composition

1 岂不 qǐbù
  1. how couldn't...?
  2. wouldn't it...?
=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