失口

shīkǒu
  1. slip of the tongue
  2. indiscretion
  3. to blurt out a secret

CEDICT

to say what should not be said; to make an improper remark; to put one's foot in one's mouth; to make a slip of the tongue

Wiktionary

失言。

重編國語辭典

Entry Composition

1 失 shī
  1. to lose
  2. to miss
  3. to fail
2 口 kǒu
  1. mouth
  2. classifier for things with mouths (people, domestic animals, cannons, wells etc)
  3. classifier for bites or mouthfuls

Related entries

失言 shīyán
  1. slip of the tongue
  2. indiscretion
  3. to blurt out a secret
一時失言常常會帶來意想不到的結果。

A slip of the tongue often brings about unexpected results.

Source: Tatoeba

語失 yǔshī
  1. indiscreet remark
  2. indiscretion
  3. slip of the tongue