脱口而出

脫口而出
tuōkǒuérchū
(idiom) to blurt out; to let slip (an indiscreet remark)

CEDICT

Entry Composition

1 脱口 tuōkǒu to blurt out
2 而 ér
  1. and
  2. as well as
  3. and so
  4. but (not)
  5. yet (not)
  6. (indicates causal relation)
  7. (indicates change of state)
  8. (indicates contrast)
=3 出 chū
  1. to go out; to come out
  2. to arise; to occur
  3. to produce; to yield
  4. to go beyond; to exceed
  5. (used after a verb to indicate an outward direction or a positive result)
  6. classifier for dramas, plays, operas etc
=3 出 chū variant of 出 chū (classifier for plays or chapters of classical novels)